cp's OEIS Frontend

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.

A254165 Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

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%I A254165 #6 Jul 23 2025 14:29:10
%S A254165 348032,6831024,139009432,2589374656,47722312832,886761490936,
%T A254165 16524431408400,307997125181376,5746900683155904,107280164731745488,
%U A254165 2002796615748790976,37391100588451055760,698081587720476379072
%N A254165 Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
%C A254165 Column 5 of A254168
%H A254165 R. H. Hardin, <a href="/A254165/b254165.txt">Table of n, a(n) for n = 1..210</a>
%e A254165 Some solutions for n=1
%e A254165 ..0..0..1..1..0..1..0....0..0..1..1..1..0..0....0..0..1..1..0..0..0
%e A254165 ..1..1..1..1..0..1..1....0..1..0..0..1..1..0....0..0..0..0..0..1..0
%e A254165 ..1..1..1..0..0..1..0....1..0..1..0..0..0..0....1..1..0..1..0..0..0
%K A254165 nonn
%O A254165 1,1
%A A254165 _R. H. Hardin_, Jan 26 2015