This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A363836 #20 Feb 01 2024 00:10:09 %S A363836 39,587,124499 %N A363836 a(n) = smallest number m such that digitsum(m^n) < digitsum(m), or -1 if no such m exists. %C A363836 a(n) > 0 when n is even (see MSE link). %C A363836 a(5) > 10^12 or a(5) = -1. - _Max Alekseyev_, Jan 26 2024 %H A363836 Jeppe Stig Nielsen et al., <a href="https://math.stackexchange.com/q/1401871">Integers n for which the digit sum of n exceeds the digit sum of n^5</a>, Math StackExchange, 2015. %e A363836 a(2) = A064399(1). %e A363836 a(3) = A064209(1). %e A363836 a(4) = A261439(1). %Y A363836 Cf. A007953, A064399, A064209, A122484, A261439, A292832. %K A363836 nonn,base,bref,hard,more %O A363836 2,1 %A A363836 _Max Alekseyev_, Oct 19 2023