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 A227646 #4 Jul 19 2013 06:04:15 %S A227646 8,9,16,25,32,36,125,128,144,216,243,289,729,1444,1681,2304,3600,5832, %T A227646 45369,121104,363609,7257636,11289600,6234681600 %N A227646 Perfect powers equal to the sum of 5 factorial numbers. %C A227646 a(25), if it exists, is larger than 10^100. %H A227646 Giovanni Resta, <a href="/A227646/a227646.txt">Decompositions of a(1)-a(24)</a> %e A227646 5832 = 18^3 = 4! + 4! + 4! + 6! + 7!. %Y A227646 Cf. A114377, A227644-A227651. %K A227646 nonn %O A227646 1,1 %A A227646 _Giovanni Resta_, Jul 19 2013