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A187644 Number of (n+2)X7 0..2 arrays with each 3X3 subblock having sum 9 0
3703651, 9368309, 24351579, 67476109, 234213387 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A187645

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 4X7

..0..1..2..0..1..1..0....0..1..2..1..2..2..0....0..0..2..0..2..1..1

..0..0..1..1..1..2..0....0..2..2..0..2..1..1....0..2..1..1..0..2..0

..1..2..2..0..1..2..1....1..1..0..0..0..1..0....1..2..1..0..2..1..0

..0..1..2..0..1..1..0....1..0..2..2..1..2..1....0..0..2..0..2..1..1

CROSSREFS

Sequence in context: A080660 A080659 A216002 * A136287 A254496 A254489

Adjacent sequences:  A187641 A187642 A187643 * A187645 A187646 A187647

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 12 2011

STATUS

approved

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Last modified August 20 05:25 EDT 2019. Contains 326139 sequences. (Running on oeis4.)