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A253963 Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal median minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1

%I #4 Jan 20 2015 20:56:10

%S 16544,148332,1501724,15946360,167174472,1776422573,18766879524,

%T 200052924697,2120928268556,22563627780321,239316890622432,

%U 2543377016374825,26985242829750688,286617838915627817

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

%C Row 3 of A253961

%H R. H. Hardin, <a href="/A253963/b253963.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..1..1..0..1....0..1..1..1....0..0..0..0....0..0..1..1....0..0..1..1

%e ..0..0..1..1....1..0..1..1....1..1..0..1....1..0..1..0....1..1..1..1

%e ..0..1..0..0....0..1..0..0....0..1..0..0....1..0..1..0....0..0..0..0

%e ..1..0..1..1....1..0..1..1....1..0..0..0....1..1..0..1....1..1..0..0

%e ..1..0..0..0....1..0..0..1....1..1..1..0....1..0..0..1....1..1..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 20 2015

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Last modified April 16 03:28 EDT 2024. Contains 371696 sequences. (Running on oeis4.)