A187643 Number of (n+2) X 6 0..2 arrays with each 3 X 3 subblock having a sum of 9.

596653, 1747075, 5273797, 17048731, 67476109, 275808307, 1180360357, 5652251635, 27729452461, 140207992699, 758880838813, 4181652023251, 23526377578933, 138205654308355, 822362988368317, 4963895328442891

Offset

1,1

Comments

Column 4 of A187645.

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

Some solutions for 4 X 6
..0..1..1..0..0..2....0..2..0..0..2..0....0..1..2..0..0..2....0..2..1..1..2..0
..0..1..1..1..2..2....0..1..1..2..2..2....0..0..1..1..2..1....0..1..2..0..1..2
..2..1..2..1..1..0....2..1..2..0..0..1....2..1..2..1..0..2....1..2..0..0..2..1
..0..1..1..0..0..2....1..0..1..1..0..1....2..1..0..2..0..0....1..0..2..2..0..1

Crossrefs

Cf. A187645.

Sequence in context: A232361 A236736 A205270 * A283956 A151435 A143910

Adjacent sequences: A187640 A187641 A187642 * A187644 A187645 A187646

Keyword

nonn

Author

R. H. Hardin Mar 12 2011

Status

approved