Re: hot to write out this summation:

On 30/06/2024 22:38, Chris M. Thomasson wrote:

r[0] = .01
r[1] = .0011
r[2] = .000111
r[3] = .00001111
r[4] = .0000011111
...
 
Now, think of a possible formula.

If you start numbering at 1 instead of 0, then

r[n] = int(10^n / 9) / 10^(2n)

where int denotes the integer portion of the value.

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