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 A227672 #7 Jul 19 2013 16:14:56 %S A227672 1,3628800,126651310675680,5140671157605632743040, %T A227672 216245142312150285990621189096,9200010705455824278689045306643126144, %U A227672 392997779138060823651445903318712755280168960,16812841813975825541536765059695075768059296587720768 %N A227672 Number of lattice paths from {n}^10 to {0}^10 using steps that decrement one component by 1 such that for each point (p_1,p_2,...,p_10) we have abs(p_{i}-p_{i+1}) <= 1. %H A227672 Alois P. Heinz, <a href="/A227672/b227672.txt">Table of n, a(n) for n = 0..50</a> %e A227672 a(10) = 10! = 3628800. %Y A227672 Column k=10 of A227655. %Y A227672 Cf. A000142. %K A227672 nonn %O A227672 0,2 %A A227672 _Alois P. Heinz_, Jul 19 2013