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A186907 Number of (n+2)X3 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 1
2066505, 59969593, 1276581035, 22000126445, 319741716426, 4028133387613, 44902749582723, 449959668016830, 4103914508092780, 34409633745323847, 267409041699567853, 1939370255679423718, 13202565796526137619 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A186915

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

R. H. Hardin, Polynomial of degree 83

FORMULA

Polynomial of degree 83 in n, see link.

EXAMPLE

Some solutions for 4X3

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

..0..3..3....0..0..2....0..3..3....0..1..5....0..0..0....0..0..1....0..0..2

..0..3..4....0..1..1....0..4..5....0..6..5....0..2..5....0..3..3....0..5..2

..0..6..6....3..2..1....2..3..3....6..4..6....3..3..5....0..5..4....6..0..0

CROSSREFS

Sequence in context: A251512 A113568 A186915 * A186906 A335398 A155125

Adjacent sequences:  A186904 A186905 A186906 * A186908 A186909 A186910

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 28 2011

STATUS

approved

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Last modified April 15 05:52 EDT 2021. Contains 342975 sequences. (Running on oeis4.)