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A253964 Number of (4+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 20:56:51

%S 82064,1048679,16186768,240903042,3635332193,55074999330,842101547904,

%T 12802459369072,195350367766384,2970097255663872,45280029102342932,

%U 688881047066816640,10494585260439156612,159689411999639997872

%N Number of (4+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 4 of A253961

%H R. H. Hardin, <a href="/A253964/b253964.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 20 2015

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)