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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 0
512, 33568, 4414976, 1181976144, 715564083200, 1014919309654928, 3255970677691466752, 24325125999141426676432, 420651849432806794384432128, 16888938153886207420988320043408, 1569395229293536931642987534329523200 (list; graph; refs; listen; history; text; internal format)
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

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Last modified June 28 16:56 EDT 2022. Contains 354907 sequences. (Running on oeis4.)