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 A227651 #4 Jul 19 2013 06:04:50 %S A227651 16,25,27,32,36,49,64,81,100,125,128,144,169,196,216,225,256,289,324, %T A227651 343,400,441,484,512,529,625,676,729,784,841,900,1000,1024,1089,1156, %U A227651 1225,1331,1444,1521,1600,1681,1728,1936,2048,2187,2197,2304,2401,2916,3025 %N A227651 Perfect powers equal to the sum of 10 factorial numbers. %C A227651 a(240), if it exists, is larger than 10^50. %H A227651 Giovanni Resta, <a href="/A227651/b227651.txt">Table of n, a(n) for n = 1..239</a> (terms < 10^50) %H A227651 Giovanni Resta, <a href="/A227651/a227651.txt">Decompositions for a(1)-a(239)</a> %e A227651 25411681 = 71^4 = 1! + 7! + 7! + 10! + 10! + 10! + 10! + 10! + 10! + 10!. %Y A227651 Cf. A114377, A227644-A227650. %K A227651 nonn %O A227651 1,1 %A A227651 _Giovanni Resta_, Jul 19 2013