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A184080 Number of (n+1)X9 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one 0
5645, 28248, 1588555, 114306440, 11365443208, 1151733506397 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A184081

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 3X9

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

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

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

...

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

...2..2..3..3..3..4..4..4.......2..2..3..4..5..5..5..6...

CROSSREFS

Sequence in context: A022010 A201252 A247402 * A234401 A203726 A262660

Adjacent sequences:  A184077 A184078 A184079 * A184081 A184082 A184083

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 09 2011

STATUS

approved

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Last modified October 22 16:20 EDT 2019. Contains 328318 sequences. (Running on oeis4.)