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 A047724 #5 Nov 04 2015 13:46:39 %S A047724 13,28,43,58,73,88,93,103,108,118,123,133,138,148,153,163,168,173,178, %T A047724 183,188,193,198,203,208,213,218,228,233,243,248,253,258,263,268,273, %U A047724 278,283,293,298,308,313,323,328,333,338,343,348,358,363,373,378,388 %N A047724 Sum of 13 nonzero fourth powers. %t A047724 Union[Total/@Tuples[Range[3]^4,13]] (* _Harvey P. Dale_, Nov 04 2015 *) %Y A047724 Cf. A000583, A003346, A046044. %K A047724 nonn %O A047724 1,1 %A A047724 Arlin Anderson (starship1(AT)gmail.com)