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A183969 Number of (n+1)X9 0..2 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one 0
22235391, 6415409881, 2080498882227, 802997664018905, 314952766527081107 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A183971

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 3X9

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

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

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

...

...1..1..1..2..2..1..1..1.......1..1..1..2..2..1..2..1...

...1..1..1..1..2..2..1..2.......1..1..1..1..2..1..2..2...

CROSSREFS

Sequence in context: A184375 A183799 A205096 * A112644 A179710 A069317

Adjacent sequences:  A183966 A183967 A183968 * A183970 A183971 A183972

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 08 2011

STATUS

approved

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Last modified October 15 20:45 EDT 2021. Contains 348034 sequences. (Running on oeis4.)