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 A229435 #6 Jul 23 2025 05:44:53 %S A229435 9331,19122559,22257074415,19598169849191,15371734909895599, %T A229435 11611618877765958295,8650356197223659310975, %U A229435 6394837795349409499553191,4704736719032327265824431759,3450565405632958348593749850423 %N A229435 Number of nX5 0..6 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X6 0..2 array. %C A229435 Column 5 of A229437 %H A229435 R. H. Hardin, <a href="/A229435/b229435.txt">Table of n, a(n) for n = 1..15</a> %e A229435 Some solutions for n=2 %e A229435 ..0..0..0..1..0....0..0..3..4..4....0..0..3..4..4....0..0..0..0..3 %e A229435 ..2..1..2..3..3....1..3..4..1..3....1..2..5..4..5....1..2..1..1..3 %K A229435 nonn %O A229435 1,1 %A A229435 _R. H. Hardin_ Sep 23 2013