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A186087 Number of (n+2)X(n+2) 0..4 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 0
102251, 22559052, 4527262140, 837192826927, 142701733009836, 22643128901373831, 3389319838308873682, 482195323502778740280, 65081669155365981380613, 8294413388145189171875895 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A186096
LINKS
EXAMPLE
Some solutions for 4X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..1..2....0..0..0..1....0..0..1..3....0..0..0..3....0..0..1..3
..0..2..2..4....0..0..1..2....0..1..0..2....0..2..3..3....0..1..1..1
..3..4..2..4....3..3..0..1....0..4..3..0....2..4..3..1....2..4..2..3
CROSSREFS
Sequence in context: A106813 A186096 A186088 * A106814 A220076 A235694
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 12 2011
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)