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A254496 Number of (6+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1

%I #4 Jan 31 2015 10:10:00

%S 3727552,186176000,8348864128,410404894080,18731454463744,

%T 871411470160000,39847094492435712,1831452813902816384,

%U 83780252884746539264,3852333354449454864000,176605048902403003470080

%N Number of (6+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

%C Row 6 of A254491

%H R. H. Hardin, <a href="/A254496/b254496.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=1

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

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 31 2015

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)