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 A058085 #6 Nov 14 2013 12:09:10 %S A058085 1,15,105,952,9090,95382,1087842,13434840,178777899,2551800461, %T A058085 38906449491,631240265424,10861179600740,197569486825452, %U A058085 3788783963810532,76401913920275280,1616286241420420437,35794282853874086955,828206562646486747645 %N A058085 Coefficients of ménage hit polynomials. %D A058085 J. Riordan, An Introduction to Combinatorial Analysis, Wiley, 1958, p. 198. %Y A058085 A diagonal of A058057. %K A058085 nonn %O A058085 5,2 %A A058085 _N. J. A. Sloane_, Dec 02 2000