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 A260045 #5 Jul 23 2015 12:01:38 %S A260045 1,-5,31,-125,-1769 %N A260045 Coefficients arising in an asymptotic expansion for the menage numbers. %H A260045 S. M. Kerawala, <a href="/A001569/a001569.pdf">Asymptotic solution of the "Probleme des menages</a>, Bull. Calcutta Math. Soc., 39 (1947), 82-84. [Annotated scanned copy] %Y A260045 Cf. A000179, A001569. %K A260045 sign,more %O A260045 1,2 %A A260045 _N. J. A. Sloane_, Jul 23 2015