Is there any way to reduce the following summation... $2^{ar^0}+2^{ar^1}....+ 2^{ar^n} $ to a simple equation?
I feel like I can pull out a $2^a$ somehow and then treat it as a normal series but I can't figure it out.
2026-03-28 08:35:37.1774686937
sum of exponential series with power increasing by geometric series
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