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 A132465 #1 Dec 09 2007 03:00:00 %S A132465 0,0,0,0,0,0,1,63,1232,13104,94500,518364,2317392,8833968,29630601, %T A132465 89464375,247351104,634542272,1526183568,3470399856,7511688000, %U A132465 15564217536,31016698713,59686024167,111284511184,201628350000,355896440900,613353440700,1034083486800 %N A132465 Let df(n,k) = Product_{i=0..k-1} (n-i) be the descending factorial and let P(m,n) = df(n-1,m-1)^2*(2*n-m)/((m-1)!*m!). Sequence gives P(7,n). %Y A132465 See A132458 for further information. %K A132465 nonn %O A132465 1,8 %A A132465 Ottavio D'Antona (dantona(AT)dico.unimi.it), Oct 31 2007