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 A222338 #6 Jul 23 2025 02:30:16 %S A222338 1296,5541126,23691810366,101297497221786,433110977725751106, %T A222338 1851823828949372226486,7917720099292335726179166, %U A222338 33853269728349231756633211146,144744175965862513604773406152386 %N A222338 Number of nX5 0..6 arrays with no entry increasing mod 7 by 6 rightwards or downwards, starting with upper left zero. %C A222338 Column 5 of A222340 %H A222338 R. H. Hardin, <a href="/A222338/b222338.txt">Table of n, a(n) for n = 1..73</a> %F A222338 Empirical: a(n) = 4726*a(n-1) -1996686*a(n-2) +308276506*a(n-3) -18629904781*a(n-4) +185850985068*a(n-5) +13276501451568*a(n-6) -66007323700200*a(n-7) %e A222338 Some solutions for n=3 %e A222338 ..0..0..3..4..1....0..0..3..0..2....0..0..3..6..1....0..0..4..5..3 %e A222338 ..0..0..0..0..4....0..0..0..1..4....0..0..0..3..5....0..0..0..3..3 %e A222338 ..0..0..0..0..5....0..0..0..4..4....0..0..0..3..3....0..0..0..5..0 %K A222338 nonn %O A222338 1,1 %A A222338 _R. H. Hardin_ Feb 15 2013