A185432 Number of (n+2)X8 0..7 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order

77657199293322, 33575010264022917, 7468756070356586903, 1081599389409258559731, 112849363355150447528536, 9008824580891342846197566, 573443108636317829849582612

Offset

1,1

Comments

Column 6 of A185435

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for 4X8
..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..3....0..0..0..0..0..0..0..0
..0..0..0..0..0..0..1..6....0..0..0..0..0..0..1..2....0..0..0..0..0..0..0..4
..0..0..0..0..0..0..2..1....0..0..0..0..0..0..2..0....0..0..0..0..0..0..3..2
..0..0..0..0..0..0..2..2....0..0..0..0..0..0..4..2....0..0..0..0..0..0..6..7

Crossrefs

Sequence in context: A320863 A139575 A317874 * A288285 A053586 A027605

Adjacent sequences: A185429 A185430 A185431 * A185433 A185434 A185435

Keyword

nonn

Author

R. H. Hardin Jan 27 2011

Status

approved