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 A171500 #16 May 10 2025 09:15:19 %S A171500 1,10,1000,7776,27100,73440,95120,500499,505791,540539,598697,665335, %T A171500 697598,732347,7607610,37944478,46945205,54995500,55216205,56607166, %U A171500 58106906,63136413,66595563,68167738,68807564,69188525,70667477,72197730,73197730,74145807 %N A171500 "Kaprekar quintuples": digits of X^5 taken D at a time sum to X (where D is number of digits in X.) %C A171500 Referred to as "natural" Kaprekar numbers on Munafo webpage because a(n) and the 5 pieces of a(n)^5 must all have the same number of digits (some of which can be leading zeros). Analogous to A053816 for squares, as opposed to A006886 and A045913 which allow irregular divisions. %H A171500 Robert Gerbicz, <a href="/A171500/b171500.txt">Table of n, a(n) for n = 1..26397</a> %H A171500 Robert Munafo, <a href="http://www.mrob.com/pub/seq/kaprekar.html">Kaprekar Sequences</a> %e A171500 7776^5 = 28430288029929701376 ; 2843+0288+0299+2970+1376 = 7776. %e A171500 27100^5 = 14616603103510000000000 ; 146+16603+10351+00000+00000 = 27100. %Y A171500 Cf. A006886, A006887, A045913, A053816, A171493. %K A171500 base,nonn %O A171500 1,2 %A A171500 _Robert Munafo_, Dec 10 2009 %E A171500 More terms from _Robert Gerbicz_, Jul 28 2011