A250567 Number of (n+2)X(n+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column

512, 39852, 9583440, 6967413024, 15037777879872, 99734163008521518, 2034240174378849957658, 127927996167974091553962336

Offset

1,1

Comments

Diagonal of A250574

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A254084 A284033 A240933 * A035753 A107549 A186797

Adjacent sequences: A250564 A250565 A250566 * A250568 A250569 A250570

Keyword

nonn

Author

R. H. Hardin, Nov 25 2014

Status

approved