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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

R. H. Hardin, Table of n, a(n) for n = 1..27

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

Adjacent sequences:  A185428 A185429 A185430 * A185432 A185433 A185434

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 27 2011

STATUS

approved

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Last modified January 23 04:16 EST 2020. Contains 331168 sequences. (Running on oeis4.)