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 A250954 #6 Jul 23 2025 12:53:59 %S A250954 10864,941192,81431944,7045780240,609622239024,52746349035592, %T A250954 4563772381621072,394871276236514256,34165447249322574280, %U A250954 2956096975721586686992,255770377182374037886152 %N A250954 Number of (n+1)X(6+1) 0..1 arrays with no 2X2 subblock having its maximum diagonal element less than its minimum antidiagonal element. %C A250954 Column 6 of A250956 %H A250954 R. H. Hardin, <a href="/A250954/b250954.txt">Table of n, a(n) for n = 1..210</a> %F A250954 Empirical: a(n) = 103*a(n-1) -1452*a(n-2) +1999*a(n-3) +25412*a(n-4) -90159*a(n-5) +84285*a(n-6) +261*a(n-7) -20412*a(n-8) +4212*a(n-9) %e A250954 Some solutions for n=1 %e A250954 ..0..0..0..1..0..0..1....1..1..0..0..0..0..0....1..0..1..1..0..1..1 %e A250954 ..0..1..1..1..1..1..1....0..1..1..0..1..0..1....0..1..1..0..0..0..0 %K A250954 nonn %O A250954 1,1 %A A250954 _R. H. Hardin_, Nov 28 2014