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A185431 Number of (n+2)X7 0..7 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 1
4370405405266, 1297535366114472, 209290512833668811, 22687513754718781985, 1812817799965228636502, 112849363355150447528536, 5686283998453160141912882, 238618763396476742696570337 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A185435
LINKS
EXAMPLE
Some solutions for 4X7
..0..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..0..0..0
..0..0..0..0..0..0..2....0..0..0..0..0..0..2....0..0..0..0..0..1..5
..0..0..0..0..0..3..1....0..0..0..0..0..1..2....0..0..0..0..0..4..0
..0..0..0..0..0..6..2....0..0..0..0..0..2..4....0..0..0..0..0..4..7
CROSSREFS
Sequence in context: A288284 A233504 A013640 * A139574 A233625 A237361
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 27 2011
STATUS
approved

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Last modified May 27 15:22 EDT 2024. Contains 372862 sequences. (Running on oeis4.)