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 A094080 #6 Mar 31 2012 10:26:02 %S A094080 7,17,31,47,49,113,79,71,97,161,119,191,127,271,217,167,161,367,343, %T A094080 199,223,329,497,241,353,287,383,673,287,593,553,511,433,337,751,791, %U A094080 623,503,391,607,521,439,697,569,449,919,809,1169,617,527,511,1153,1009 %N A094080 a(n)=sqrt(2*h^2 - d^2) where h=A094079 and d=A058529(n). %K A094080 nonn %O A094080 1,1 %A A094080 _Lekraj Beedassy_, Apr 30 2004 %E A094080 Corrected and extended by _R. J. Mathar_, Jul 27 2007