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 A294071 #7 Feb 08 2018 14:15:14
%S A294071 1,0,0,0,1,5,6,7,288,262,13702,69531,610567,5356091,51724960,
%T A294071 521956086,5467658641,59931636545,690518644584,8100858045744,
%U A294071 99142980567486,1246972499954475,16142015005905558,215722810653380845,2955759897694815985,41614888439136252691
%N A294071 Number of ordered ways of writing n^2 as a sum of n squares > 1.
%H A294071 <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a>
%F A294071 a(n) = [x^(n^2)] (Sum_{k>=2} x^(k^2))^n.
%e A294071 a(5) = 5 because we have [9, 4, 4, 4, 4], [4, 9, 4, 4, 4], [4, 4, 9, 4, 4], [4, 4, 4, 9, 4] and [4, 4, 4, 4, 9].
%t A294071 Table[SeriesCoefficient[((-1 - 2 x + EllipticTheta[3, 0, x])/2)^n, {x, 0, n^2}], {n, 0, 25}]
%Y A294071 Cf. A000290, A037444, A066535, A078134, A092362, A232173, A280129, A280542, A281154, A281155, A298329, A298330, A298640, A298642.
%K A294071 nonn
%O A294071 0,6
%A A294071 _Ilya Gutkovskiy_, Feb 07 2018