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A253814 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically 1
2700, 12992, 60392, 181070, 651937, 2008068, 7125170, 23696686, 83201751, 284492002, 989245744, 3404806015, 11765494893, 40505747884, 139520863174, 479991310053, 1651051052299, 5677350741360, 19519625917475, 67108356622603 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A253820

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Sequence in context: A322525 A254805 A254798 * A054561 A230752 A246888

Adjacent sequences: A253811 A253812 A253813 * A253815 A253816 A253817

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 14 2015

STATUS

approved

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Last modified December 8 03:48 EST 2022. Contains 358672 sequences. (Running on oeis4.)