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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.)