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 A113332 #6 Sep 08 2013 13:30:50 %S A113332 2,10,84,930,12452,193284,3393480,66310914,1425717060,33435425100, %T A113332 849342514200,23235509430900,681196753501992,21309727555222600, %U A113332 708630046700665104,24964702239372310338,928914855447585334020 %N A113332 a(n) = A113129(2*n+2,n+2) for n>=0. %C A113332 Related to A000699, the number of irreducible diagrams with 2n nodes. %F A113332 a(n) = A000699(n+1)*(2*n+3)*(n+2)/(3*(n+1)). %Y A113332 Cf. A113129, A000699. %K A113332 nonn %O A113332 0,1 %A A113332 _Philippe Deléham_ and _Paul D. Hanna_, Nov 03 2005