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A183363
Number of n X n binary arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors
0
1, 3, 18, 138, 3102, 137688, 12617557, 2402945556, 936460285557, 739951660291721
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A183368
LINKS
Table of n, a(n) for n=1..10.
EXAMPLE
Some solutions for 5X5
..1..0..0..1..1....1..1..1..0..0....1..1..1..1..0....1..1..0..0..1
..0..0..1..1..1....1..0..1..0..1....1..0..0..1..0....1..1..1..0..0
..1..0..1..0..1....1..1..1..0..0....1..0..0..1..1....1..0..1..1..1
..0..0..1..1..1....0..0..1..1..1....1..1..1..1..1....1..1..0..1..1
..1..0..1..1..1....1..0..1..1..1....1..1..0..0..0....0..1..1..1..0
CROSSREFS
Sequence in context: A275549 A357403 A039618 * A216492 A127129 A186266
Adjacent sequences: A183360 A183361 A183362 * A183364 A183365 A183366
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 04 2011
STATUS
approved

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Last modified November 7 23:09 EST 2024. Contains 377537 sequences.
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