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A184613 Half the number of (n+1)X9 binary arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one 0
56426, 6519094, 764691186, 98736408638, 12592730376316, 1594748121566704, 201958235918095986, 25614152794948938706, 3247744668128361058130, 411769404731317015727428 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A184614

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for 3X9

..0..0..0..0..0..0..0..1..0....0..0..0..0..0..0..0..0..1

..0..0..1..1..1..0..1..0..1....0..1..0..0..0..1..1..0..1

..0..0..0..0..1..0..1..1..1....1..0..0..0..1..0..1..0..0

...

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

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

CROSSREFS

Sequence in context: A198165 A244294 A234488 * A202433 A329270 A190836

Adjacent sequences:  A184610 A184611 A184612 * A184614 A184615 A184616

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 18 2011

STATUS

approved

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Last modified July 29 07:28 EDT 2021. Contains 346340 sequences. (Running on oeis4.)