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A251489 Number of (n+1)X(6+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements 1

%I

%S 158478336,1575813859456,15661071542167376,155634922739125247648,

%T 1546645977595845122949056,15370016315641490766809697920,

%U 152741708226257877188571836140832,1517892242344262925503829520026004048

%N Number of (n+1)X(6+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements

%C Column 6 of A251491

%H R. H. Hardin, <a href="/A251489/b251489.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

%e ..0..0..3..0..0..0..0....0..0..2..0..1..0..0....0..0..1..0..1..0..1

%e ..0..0..0..0..3..3..0....0..0..1..2..3..0..2....0..0..1..1..1..3..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 03 2014

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Last modified January 17 11:46 EST 2022. Contains 350394 sequences. (Running on oeis4.)