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 A058089 #6 Nov 14 2013 12:07:31 %S A058089 2,35,280,2856,30300,349734,4351368,58217640,834296862,12759002305, %T A058089 207501063952,3577028170736,65167077604440,1251273416561196, %U A058089 25258559758736880,534813397441926960,11852765770416416538,274422835213034666655 %N A058089 Coefficients of ménage hit polynomials. %D A058089 J. Riordan, An Introduction to Combinatorial Analysis, Wiley, 1958, p. 197. %Y A058089 A diagonal of A058087. Cf. A000179, A000425. %K A058089 nonn %O A058089 6,1 %A A058089 _N. J. A. Sloane_, Dec 02 2000