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 A025379 #15 May 03 2020 15:15:53 %S A025379 142,158,162,165,182,183,195,206,207,214,215,218,226,239,243,245,259, %T A025379 260,262,263,289,298,299,300,301,317,324,329,331,337,355,364,372,373, %U A025379 389,409,428,436,452,461,484,532,548,556,568,580,632,648,728,824,856,872,904 %N A025379 Numbers that are the sum of 4 distinct nonzero squares in exactly 4 ways. %H A025379 Harvey P. Dale, <a href="/A025379/b025379.txt">Table of n, a(n) for n = 1..100</a> %H A025379 <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a> %F A025379 {n: A025443(n) = 4}. - _R. J. Mathar_, Jun 15 2018 %t A025379 With[{nn=40},Select[Union[Select[Tally[Total/@Subsets[Range[nn]^2,{4}]], #[[2]] == 4&][[All,1]]],#<=nn^2-14&]] (* _Harvey P. Dale_, May 03 2020 *) %Y A025379 Cf. A025388, A025360. %K A025379 nonn %O A025379 1,1 %A A025379 _David W. Wilson_