I think you may be asking about base-36 representation. Hex() can do that with the optional base parameter.
hex(38,base(36))
"12"
that means the 1 is in the 36s place and the 2 is in the 1s place.
Just like in base 10, "38" has a 3 in the 10s place and an 8 on the 1s place.
For( i = 0, i < 100, i += 1,
Write(
Eval Insert(
"\!n^i^₁₀ = ^hex(i,base(36))^₃₆ \!t\!t^i+1000^₁₀ = ^hex(i+1000,base(36))^₃₆ \!t\!t^i+1e6^₁₀ = ^hex(i+1e6,base(36))^₃₆ \!t "
)
)
)
0₁₀ = 0₃₆ 1000₁₀ = RS₃₆ 1000000₁₀ = LFLS₃₆
1₁₀ = 1₃₆ 1001₁₀ = RT₃₆ 1000001₁₀ = LFLT₃₆
2₁₀ = 2₃₆ 1002₁₀ = RU₃₆ 1000002₁₀ = LFLU₃₆
3₁₀ = 3₃₆ 1003₁₀ = RV₃₆ 1000003₁₀ = LFLV₃₆
4₁₀ = 4₃₆ 1004₁₀ = RW₃₆ 1000004₁₀ = LFLW₃₆
5₁₀ = 5₃₆ 1005₁₀ = RX₃₆ 1000005₁₀ = LFLX₃₆
6₁₀ = 6₃₆ 1006₁₀ = RY₃₆ 1000006₁₀ = LFLY₃₆
7₁₀ = 7₃₆ 1007₁₀ = RZ₃₆ 1000007₁₀ = LFLZ₃₆
8₁₀ = 8₃₆ 1008₁₀ = S0₃₆ 1000008₁₀ = LFM0₃₆
9₁₀ = 9₃₆ 1009₁₀ = S1₃₆ 1000009₁₀ = LFM1₃₆
10₁₀ = A₃₆ 1010₁₀ = S2₃₆ 1000010₁₀ = LFM2₃₆
11₁₀ = B₃₆ 1011₁₀ = S3₃₆ 1000011₁₀ = LFM3₃₆
12₁₀ = C₃₆ 1012₁₀ = S4₃₆ 1000012₁₀ = LFM4₃₆
13₁₀ = D₃₆ 1013₁₀ = S5₃₆ 1000013₁₀ = LFM5₃₆
14₁₀ = E₃₆ 1014₁₀ = S6₃₆ 1000014₁₀ = LFM6₃₆
15₁₀ = F₃₆ 1015₁₀ = S7₃₆ 1000015₁₀ = LFM7₃₆
16₁₀ = G₃₆ 1016₁₀ = S8₃₆ 1000016₁₀ = LFM8₃₆
17₁₀ = H₃₆ 1017₁₀ = S9₃₆ 1000017₁₀ = LFM9₃₆
18₁₀ = I₃₆ 1018₁₀ = SA₃₆ 1000018₁₀ = LFMA₃₆
19₁₀ = J₃₆ 1019₁₀ = SB₃₆ 1000019₁₀ = LFMB₃₆
20₁₀ = K₃₆ 1020₁₀ = SC₃₆ 1000020₁₀ = LFMC₃₆
21₁₀ = L₃₆ 1021₁₀ = SD₃₆ 1000021₁₀ = LFMD₃₆
22₁₀ = M₃₆ 1022₁₀ = SE₃₆ 1000022₁₀ = LFME₃₆
23₁₀ = N₃₆ 1023₁₀ = SF₃₆ 1000023₁₀ = LFMF₃₆
24₁₀ = O₃₆ 1024₁₀ = SG₃₆ 1000024₁₀ = LFMG₃₆
25₁₀ = P₃₆ 1025₁₀ = SH₃₆ 1000025₁₀ = LFMH₃₆
26₁₀ = Q₃₆ 1026₁₀ = SI₃₆ 1000026₁₀ = LFMI₃₆
27₁₀ = R₃₆ 1027₁₀ = SJ₃₆ 1000027₁₀ = LFMJ₃₆
28₁₀ = S₃₆ 1028₁₀ = SK₃₆ 1000028₁₀ = LFMK₃₆
29₁₀ = T₃₆ 1029₁₀ = SL₃₆ 1000029₁₀ = LFML₃₆
30₁₀ = U₃₆ 1030₁₀ = SM₃₆ 1000030₁₀ = LFMM₃₆
31₁₀ = V₃₆ 1031₁₀ = SN₃₆ 1000031₁₀ = LFMN₃₆
32₁₀ = W₃₆ 1032₁₀ = SO₃₆ 1000032₁₀ = LFMO₃₆
33₁₀ = X₃₆ 1033₁₀ = SP₃₆ 1000033₁₀ = LFMP₃₆
34₁₀ = Y₃₆ 1034₁₀ = SQ₃₆ 1000034₁₀ = LFMQ₃₆
35₁₀ = Z₃₆ 1035₁₀ = SR₃₆ 1000035₁₀ = LFMR₃₆
36₁₀ = 10₃₆ 1036₁₀ = SS₃₆ 1000036₁₀ = LFMS₃₆
37₁₀ = 11₃₆ 1037₁₀ = ST₃₆ 1000037₁₀ = LFMT₃₆
38₁₀ = 12₃₆ 1038₁₀ = SU₃₆ 1000038₁₀ = LFMU₃₆
39₁₀ = 13₃₆ 1039₁₀ = SV₃₆ 1000039₁₀ = LFMV₃₆
40₁₀ = 14₃₆ 1040₁₀ = SW₃₆ 1000040₁₀ = LFMW₃₆
41₁₀ = 15₃₆ 1041₁₀ = SX₃₆ 1000041₁₀ = LFMX₃₆
42₁₀ = 16₃₆ 1042₁₀ = SY₃₆ 1000042₁₀ = LFMY₃₆
43₁₀ = 17₃₆ 1043₁₀ = SZ₃₆ 1000043₁₀ = LFMZ₃₆
44₁₀ = 18₃₆ 1044₁₀ = T0₃₆ 1000044₁₀ = LFN0₃₆
45₁₀ = 19₃₆ 1045₁₀ = T1₃₆ 1000045₁₀ = LFN1₃₆
46₁₀ = 1A₃₆ 1046₁₀ = T2₃₆ 1000046₁₀ = LFN2₃₆
47₁₀ = 1B₃₆ 1047₁₀ = T3₃₆ 1000047₁₀ = LFN3₃₆
48₁₀ = 1C₃₆ 1048₁₀ = T4₃₆ 1000048₁₀ = LFN4₃₆
49₁₀ = 1D₃₆ 1049₁₀ = T5₃₆ 1000049₁₀ = LFN5₃₆
50₁₀ = 1E₃₆ 1050₁₀ = T6₃₆ 1000050₁₀ = LFN6₃₆
51₁₀ = 1F₃₆ 1051₁₀ = T7₃₆ 1000051₁₀ = LFN7₃₆
52₁₀ = 1G₃₆ 1052₁₀ = T8₃₆ 1000052₁₀ = LFN8₃₆
53₁₀ = 1H₃₆ 1053₁₀ = T9₃₆ 1000053₁₀ = LFN9₃₆
54₁₀ = 1I₃₆ 1054₁₀ = TA₃₆ 1000054₁₀ = LFNA₃₆
55₁₀ = 1J₃₆ 1055₁₀ = TB₃₆ 1000055₁₀ = LFNB₃₆
56₁₀ = 1K₃₆ 1056₁₀ = TC₃₆ 1000056₁₀ = LFNC₃₆
57₁₀ = 1L₃₆ 1057₁₀ = TD₃₆ 1000057₁₀ = LFND₃₆
58₁₀ = 1M₃₆ 1058₁₀ = TE₃₆ 1000058₁₀ = LFNE₃₆
59₁₀ = 1N₃₆ 1059₁₀ = TF₃₆ 1000059₁₀ = LFNF₃₆
60₁₀ = 1O₃₆ 1060₁₀ = TG₃₆ 1000060₁₀ = LFNG₃₆
61₁₀ = 1P₃₆ 1061₁₀ = TH₃₆ 1000061₁₀ = LFNH₃₆
62₁₀ = 1Q₃₆ 1062₁₀ = TI₃₆ 1000062₁₀ = LFNI₃₆
63₁₀ = 1R₃₆ 1063₁₀ = TJ₃₆ 1000063₁₀ = LFNJ₃₆
64₁₀ = 1S₃₆ 1064₁₀ = TK₃₆ 1000064₁₀ = LFNK₃₆
65₁₀ = 1T₃₆ 1065₁₀ = TL₃₆ 1000065₁₀ = LFNL₃₆
66₁₀ = 1U₃₆ 1066₁₀ = TM₃₆ 1000066₁₀ = LFNM₃₆
67₁₀ = 1V₃₆ 1067₁₀ = TN₃₆ 1000067₁₀ = LFNN₃₆
68₁₀ = 1W₃₆ 1068₁₀ = TO₃₆ 1000068₁₀ = LFNO₃₆
69₁₀ = 1X₃₆ 1069₁₀ = TP₃₆ 1000069₁₀ = LFNP₃₆
70₁₀ = 1Y₃₆ 1070₁₀ = TQ₃₆ 1000070₁₀ = LFNQ₃₆
71₁₀ = 1Z₃₆ 1071₁₀ = TR₃₆ 1000071₁₀ = LFNR₃₆
72₁₀ = 20₃₆ 1072₁₀ = TS₃₆ 1000072₁₀ = LFNS₃₆
73₁₀ = 21₃₆ 1073₁₀ = TT₃₆ 1000073₁₀ = LFNT₃₆
74₁₀ = 22₃₆ 1074₁₀ = TU₃₆ 1000074₁₀ = LFNU₃₆
75₁₀ = 23₃₆ 1075₁₀ = TV₃₆ 1000075₁₀ = LFNV₃₆
76₁₀ = 24₃₆ 1076₁₀ = TW₃₆ 1000076₁₀ = LFNW₃₆
77₁₀ = 25₃₆ 1077₁₀ = TX₃₆ 1000077₁₀ = LFNX₃₆
78₁₀ = 26₃₆ 1078₁₀ = TY₃₆ 1000078₁₀ = LFNY₃₆
79₁₀ = 27₃₆ 1079₁₀ = TZ₃₆ 1000079₁₀ = LFNZ₃₆
80₁₀ = 28₃₆ 1080₁₀ = U0₃₆ 1000080₁₀ = LFO0₃₆
81₁₀ = 29₃₆ 1081₁₀ = U1₃₆ 1000081₁₀ = LFO1₃₆
82₁₀ = 2A₃₆ 1082₁₀ = U2₃₆ 1000082₁₀ = LFO2₃₆
83₁₀ = 2B₃₆ 1083₁₀ = U3₃₆ 1000083₁₀ = LFO3₃₆
84₁₀ = 2C₃₆ 1084₁₀ = U4₃₆ 1000084₁₀ = LFO4₃₆
85₁₀ = 2D₃₆ 1085₁₀ = U5₃₆ 1000085₁₀ = LFO5₃₆
86₁₀ = 2E₃₆ 1086₁₀ = U6₃₆ 1000086₁₀ = LFO6₃₆
87₁₀ = 2F₃₆ 1087₁₀ = U7₃₆ 1000087₁₀ = LFO7₃₆
88₁₀ = 2G₃₆ 1088₁₀ = U8₃₆ 1000088₁₀ = LFO8₃₆
89₁₀ = 2H₃₆ 1089₁₀ = U9₃₆ 1000089₁₀ = LFO9₃₆
90₁₀ = 2I₃₆ 1090₁₀ = UA₃₆ 1000090₁₀ = LFOA₃₆
91₁₀ = 2J₃₆ 1091₁₀ = UB₃₆ 1000091₁₀ = LFOB₃₆
92₁₀ = 2K₃₆ 1092₁₀ = UC₃₆ 1000092₁₀ = LFOC₃₆
93₁₀ = 2L₃₆ 1093₁₀ = UD₃₆ 1000093₁₀ = LFOD₃₆
94₁₀ = 2M₃₆ 1094₁₀ = UE₃₆ 1000094₁₀ = LFOE₃₆
95₁₀ = 2N₃₆ 1095₁₀ = UF₃₆ 1000095₁₀ = LFOF₃₆
96₁₀ = 2O₃₆ 1096₁₀ = UG₃₆ 1000096₁₀ = LFOG₃₆
97₁₀ = 2P₃₆ 1097₁₀ = UH₃₆ 1000097₁₀ = LFOH₃₆
98₁₀ = 2Q₃₆ 1098₁₀ = UI₃₆ 1000098₁₀ = LFOI₃₆
99₁₀ = 2R₃₆ 1099₁₀ = UJ₃₆ 1000099₁₀ = LFOJ₃₆
Those should be subscripts that look like
base 10, base 36
You can go the other way too:
Hex To Number( "LFLY", Base( 36 ) );
1000006
Craige