A250593 Number of (n+2) X (n+2) 0..2 arrays with nondecreasing sum of every three consecutive values in every row and column.

19683, 2099520, 622080000, 512000000000, 175000000000000, 117236328125000000, 153936794281005859375, 95375119619390625000000, 97682483345284168128000000, 165381614442044595841154678784, 147355018467861734894468818796544, 196129529580723969144537997818200064

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..12

Example

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

Crossrefs

Diagonal of A250601.

Sequence in context: A250459 A250455 A016761 * A016773 A016845 A016893

Adjacent sequences: A250590 A250591 A250592 * A250594 A250595 A250596

Keyword

nonn

Author

R. H. Hardin, Nov 25 2014

Status

approved