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A186908 Number of (n+2)X4 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 1
59969593, 2974946682, 99241308567, 2536761070723, 52666517720011, 921058887545363, 13921822487031205, 185414592506642580, 2208956268019713255, 23828517723857362267, 235072125997423449023 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A186915
LINKS
FORMULA
Polynomial of degree 89 in n, see link.
EXAMPLE
Some solutions for 6X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..1..1..4....0..1..5..6....0..0..2..5....0..1..3..6....0..0..3..4
..2..1..5..0....4..6..2..3....3..5..4..2....4..1..3..6....1..3..4..6
CROSSREFS
Sequence in context: A104333 A106807 A213354 * A244918 A033624 A016870
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 28 2011
STATUS
approved

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Last modified February 25 06:40 EST 2024. Contains 370310 sequences. (Running on oeis4.)