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 A250953 #6 Jul 23 2025 12:53:52 %S A250953 2911,134456,6204344,286298344,13211127617,609622239024, %T A250953 28130774228952,1298083303266168,59899533694064023, %U A250953 2764039970645608136,127545516428291433088,5885536726506369363688,271585732913285543900561 %N A250953 Number of (n+1)X(5+1) 0..1 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element. %C A250953 Column 5 of A250956 %H A250953 R. H. Hardin, <a href="/A250953/b250953.txt">Table of n, a(n) for n = 1..210</a> %F A250953 Empirical: a(n) = 57*a(n-1) -516*a(n-2) +637*a(n-3) +2799*a(n-4) -3639*a(n-5) -100*a(n-6) +429*a(n-7) %e A250953 Some solutions for n=2 %e A250953 ..1..1..0..0..0..1....0..0..0..0..1..1....1..1..0..1..1..0....0..1..1..0..1..1 %e A250953 ..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..1..1..1....1..1..1..0..0..1 %e A250953 ..0..1..0..1..1..0....1..1..1..1..1..1....1..1..1..1..0..1....1..0..1..1..0..0 %K A250953 nonn %O A250953 1,1 %A A250953 _R. H. Hardin_, Nov 28 2014