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 A227662 #4 Jul 19 2013 18:45:17 %S A227662 1,1,256,6520712,2616540574496,7962224756951452544, %T A227662 120712076511505386344017520,6941648177366735193973359263017216, %U A227662 1248760044848501400078426452469652899962528,608787871679690303320891056934368872583827110376320 %N A227662 Number of lattice paths from {8}^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 A227662 a(2) = 2^8 = 256. %Y A227662 Row n=8 of A227655. %Y A227662 Cf. A000079. %K A227662 nonn %O A227662 0,3 %A A227662 _Alois P. Heinz_, Jul 19 2013