Good thinking, @Kevin_Anderson! I didn't even consider that the question might be less about spanning these values in general and more about creating a sequence. If this is the case @pankti, Kevin's already provided you one flexible option to create such a sequence. I'll give one more, which is to use the built in Sequence() function in a column formula. The syntax is:
For your situation, it appears you would use something like:
Sequence(1,99999,1,7)
That is, numbering from 1 to some value (high enough where you don't then start over), incrementing by 1 each step, and repeating each value 7 times before incrementing.
Julian