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 A007511 #14 Dec 20 2017 23:27:39 %S A007511 2,50,325,1105,5525,27625,71825,138125,160225,801125,2082925,4005625, %T A007511 5928325,29641625,77068225,148208125,243061325,1215306625,3159797225, %U A007511 6076533125,12882250225,53716552825,64411251125,167469252925,322056255625,785817263725 %N A007511 a(n) is the smallest number greater than a(n-1) that is expressible as the sum of two squares in more ways than a(n-1). %C A007511 Sequence provides the locations of records in A025426 (nonzero squares), rather than in A000161 (definition of squares includes zeros). - _R. J. Mathar_, Jun 06 2007 %H A007511 J. Meeus, <a href="/A007511/a007511.pdf">Note</a> %Y A007511 Cf. A048610. %K A007511 nonn %O A007511 1,1 %A A007511 Gabriel Cunningham (gcasey(AT)mit.edu), Feb 29 2004 %E A007511 a(12)-a(18) from _Donovan Johnson_, Sep 03 2008 %E A007511 a(19)-a(24) from _Donovan Johnson_, Jul 01 2009 %E A007511 a(25)-a(26) from _Donovan Johnson_, Aug 30 2011