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 A227659 #6 Jul 19 2013 16:42:56 %S A227659 1,1,32,16936,48447504,482913033152,12981179566917088, %T A227659 796655971557156062816,99184884676523895557447104, %U A227659 22936896882912935631904962898880,9200010705455824278689045306643126144,6059192105645758114515721403170312097489088,6265311017439732830154018479087530633271635314944 %N A227659 Number of lattice paths from {5}^n to {0}^n using steps that decrement one component by 1 such that for each point (p_1,p_2,...,p_n) we have abs(p_{i}-p_{i+1}) <= 1. %e A227659 a(2) = 2^5 = 32: %e A227659 . (4,5) (3,4) (2,3) (1,2) (0,1) %e A227659 . / \ / \ / \ / \ / \ %e A227659 (5,5) (4,4) (3,3) (2,2) (1,1) (0,0) %e A227659 . \ / \ / \ / \ / \ / %e A227659 . (5,4) (4,3) (3,2) (2,1) (1,0) %Y A227659 Row n=5 of A227655. %Y A227659 Cf. A000079. %K A227659 nonn %O A227659 0,3 %A A227659 _Alois P. Heinz_, Jul 19 2013