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 A216580 #8 Sep 10 2012 12:45:34 %S A216580 11,14,19,26,35,41,44,46,49,56,59,65,74,76,89,91,94,99,104,106,110, %T A216580 115,121,126,131,139,140,154,161,164,169,171,176,179,184,185,190,196, %U A216580 206,209,211,224,234,235,236,241,251,254,259,260,265,266,275,281,286 %N A216580 Numbers which can be written in the form x^2 + 10*y^2, where x > 0 and y > 0. %Y A216580 Cf. A020673, A033201. %K A216580 nonn %O A216580 1,1 %A A216580 _V. Raman_, Sep 08 2012