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A185428 Number of (n+2)X4 0..7 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 1
284037544, 21536560306, 1090205284029, 41910604337378, 1297535366114472, 33575010264022917, 745543958045415621, 14492443009379677098, 250496452202647761530, 3898612401674733619729, 55201391258522554476152 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A185435
LINKS
FORMULA
Polynomial of degree 126, 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..5..7....0..0..6..6....0..1..5..5....0..0..6..7....0..1..4..6
..7..4..2..7....0..5..1..4....4..3..2..6....2..5..3..3....1..5..0..3
CROSSREFS
Sequence in context: A017482 A017614 A267824 * A320878 A320879 A214155
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 27 2011
STATUS
approved

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Last modified July 18 21:02 EDT 2024. Contains 374388 sequences. (Running on oeis4.)