A253536 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nonincreasing horizontally and nondecreasing vertically

512, 33568, 4414976, 1181976144, 715564083200, 1014919309654928, 3255970677691466752, 24325125999141426676432, 420651849432806794384432128, 16888938153886207420988320043408, 1569395229293536931642987534329523200

Offset

1,1

Comments

Diagonal of A253544

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=2
..0..0..1..1....0..1..0..0....1..1..1..1....0..0..1..0....1..0..0..0
..1..0..0..1....0..1..0..1....1..0..1..1....1..0..0..0....0..0..1..1
..1..0..0..0....1..1..0..1....1..1..1..1....1..1..0..0....1..1..1..1
..1..0..1..1....1..0..1..0....0..0..1..1....0..0..0..1....0..0..0..1

Crossrefs

Sequence in context: A254484 A253864 A308815 * A254383 A253977 A254084

Adjacent sequences: A253533 A253534 A253535 * A253537 A253538 A253539

Keyword

nonn

Author

R. H. Hardin, Jan 03 2015

Status

approved