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A186911 Number of (n+2)X7 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 1
319741716426, 52666517720011, 4805827783188400, 300268014063911584, 14077041692560748494, 522748636954347087650, 15954040054059557650482, 411179480114108991321807, 9138537360691131917393508 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A186915

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..120

R. H. Hardin, Polynomial of degree 107

FORMULA

Polynomial of degree 107 in n, see link.

EXAMPLE

Some solutions for 4X7

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

..0..0..0..0..0..0..3....0..0..0..0..0..2..3....0..0..0..0..0..1..4

..0..0..0..0..0..4..0....0..0..0..0..0..5..4....0..0..0..0..0..1..4

..0..0..0..0..0..5..2....0..0..0..0..0..5..5....0..0..0..0..0..6..3

CROSSREFS

Sequence in context: A172847 A022263 A216907 * A172714 A080132 A080122

Adjacent sequences:  A186908 A186909 A186910 * A186912 A186913 A186914

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 28 2011

STATUS

approved

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Last modified December 14 22:42 EST 2019. Contains 329987 sequences. (Running on oeis4.)