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 A227649 #4 Jul 19 2013 06:04:37 %S A227649 8,9,16,25,27,32,36,49,64,81,100,125,128,144,169,196,216,225,243,256, %T A227649 289,343,361,400,484,512,576,729,784,841,900,961,1000,1089,1521,1600, %U A227649 1849,2304,5041,5184,5776,5832,6724,10201,10816,11881,14400,15129,17424 %N A227649 Perfect powers equal to the sum of 8 factorial numbers. %C A227649 a(101), if it exists, is larger than 10^100. %H A227649 Giovanni Resta, <a href="/A227649/b227649.txt">Table of n, a(n) for n = 1..100</a> (terms < 10^100) %H A227649 Giovanni Resta, <a href="/A227649/a227649.txt">Decompositions for a(1)-a(100)</a> %e A227649 10890000 = 3300^2 = 6! + 6! + 6! + 6! + 6! + 10! + 10! + 10!. %Y A227649 Cf. A114377, A227644-A227651. %K A227649 nonn %O A227649 1,1 %A A227649 _Giovanni Resta_, Jul 19 2013