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A187643 Number of (n+2) X 6 0..2 arrays with each 3 X 3 subblock having a sum of 9. 1
596653, 1747075, 5273797, 17048731, 67476109, 275808307, 1180360357, 5652251635, 27729452461, 140207992699, 758880838813, 4181652023251, 23526377578933, 138205654308355, 822362988368317, 4963895328442891 (list; graph; refs; listen; history; text; internal format)
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

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Last modified December 2 10:13 EST 2021. Contains 349437 sequences. (Running on oeis4.)