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 A181726 #7 Jul 21 2012 19:06:00 %S A181726 1,3628800,6290830003852800,30306073546461323055916800, %T A181726 231242270452155338291905203314956800, %U A181726 2293197130058463838438742129627609575368940800,26941822036577030394903099245279465611395585827577676800 %N A181726 The number of paths of a chess rook in a 10D hypercube, from (0..0) to (n..n), where the rook may move in steps that are multiples of (1,0..0), (0,1,0..0), ..., (0..0,1). %e A181726 a(1) = 3628800 because there are 3628800 rook paths from (0..0) to (1..1). %Y A181726 Row d=10 of A181731. %K A181726 nonn %O A181726 0,2 %A A181726 _Manuel Kauers_, Nov 16 2010