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 A334078 #6 Feb 16 2025 08:34:00 %S A334078 3,15,45,96,192,240,480,480,720,960,1440,1440,2880,2880,2880,3360, %T A334078 5040,5040,6720,6720,10080,10080,10080,10080,20160,20160,20160,20160, %U A334078 20160,20160,30240,30240,40320,40320,40320,40320,60480,60480,60480,60480,80640,80640 %N A334078 a(n) is the smallest positive integer that can be expressed as the difference of two positive squares in at least n ways. %H A334078 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SquareNumber.html">Square Number</a> %Y A334078 Cf. A000290, A024352, A048610, A068314, A094191, A100073, A214771, A334077. %K A334078 nonn %O A334078 1,1 %A A334078 _Ilya Gutkovskiy_, Apr 13 2020