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 A025377 #11 Jun 15 2018 05:32:47
%S A025377 90,94,95,99,105,111,119,123,129,134,138,141,143,146,151,153,154,155,
%T A025377 166,167,169,179,185,193,197,199,203,209,213,217,227,241,251,253,257,
%U A025377 269,276,283,293,307,308,313,356,360,376,536,552,584,616,664,1104,1232,1424,1440
%N A025377 Numbers that are the sum of 4 distinct nonzero squares in exactly 2 ways.
%H A025377 <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a>
%F A025377 {n: A025443(n) = 2}. - _R. J. Mathar_, Jun 15 2018
%Y A025377 Cf. A025386.
%K A025377 nonn
%O A025377 1,1
%A A025377 _David W. Wilson_