A254160 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

512, 23660, 1553720, 191190272, 47722312832, 24789263869340, 27196332026497280, 62670987439073417464, 306649596390478314360688, 3185451673330281289722851308, 70105876620029167895782015020688

Offset

1,1

Comments

Diagonal of A254168

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

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

Crossrefs

Sequence in context: A253793 A253756 A250496 * A254450 A254484 A253864

Adjacent sequences: A254157 A254158 A254159 * A254161 A254162 A254163

Keyword

nonn

Author

R. H. Hardin, Jan 26 2015

Status

approved