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A185882 1/729 the number of (n+2)X(n+2) 0..2 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace 0
27, 28086, 151319356, 4223442979220, 601942558514445972, 440856600893036211079732 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A185891
LINKS
EXAMPLE
Some solutions for 4X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..1..0..2....0..0..1..0....0..2..0..0....0..1..1..1
..1..2..1..0....1..2..1..0....2..0..0..2....0..1..2..1....0..1..1..2
..1..1..0..0....2..2..1..2....0..1..2..0....2..0..0..2....1..2..2..2
CROSSREFS
Sequence in context: A343692 A201369 A036529 * A278140 A171110 A034206
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 05 2011
STATUS
approved

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Last modified June 12 17:07 EDT 2024. Contains 373337 sequences. (Running on oeis4.)