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A254490 Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
20872192, 1608739904, 111699091200, 8153154979328, 566704583699968, 39847094492435712, 2791393651770044928, 195729911005053100544, 13689397617466091628032, 959275333788055608747520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A254491

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for n=1

..0..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..0..1

..0..1..1..1..1..1..1..0..0....1..0..1..0..0..1..0..0..1

..0..0..1..0..1..0..0..0..1....0..1..1..0..1..1..0..1..1

CROSSREFS

Sequence in context: A321670 A356071 A254497 * A253862 A172729 A174115

Adjacent sequences: A254487 A254488 A254489 * A254491 A254492 A254493

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 31 2015

STATUS

approved

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Last modified January 30 09:40 EST 2023. Contains 359943 sequences. (Running on oeis4.)