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 A229240 #21 Sep 30 2013 04:42:44 %S A229240 4,5,9,12,23,31,33,35,44,57,60,81,107,123,157,179,204,212,273,293,311, %T A229240 369,391,411,417,459,555,620,657,679,1076,1115,1187,1259,1275,1308, %U A229240 1377,1453,1713,1813,1979,2508,2604,2673,2764,2817,2885,3419,3475,3804,3849,4055,4139,4397,4683,4969,6267,6393,6439,7375 %N A229240 Sorted list of largest values in the quintuple (a,b,c,d,e) satisfying a^2 + b^2 + c^2 + d^2 + e^2 = a*b*c*d*e. %e A229240 a(1)=4 since (4, 3, 3, 1, 1) is a solution of a^2 + b^2 + c^2 + d^2 + e^2 = a*b*c*d*e. %e A229240 a(2)=5 since (5, 3, 3, 1, 1) is a solution. %e A229240 a(3)=9 since (9, 4, 3, 1, 1) is a solution. %K A229240 nonn %O A229240 1,1 %A A229240 _Shanzhen Gao_, Sep 17 2013 %E A229240 Definition corrected by _Ralf Stephan_, Sep 18 2013