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A195955
Number of n X n 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors unequal to itself
0
1, 1, 10, 19, 33, 214, 945, 4847, 52912, 661587, 10923672
OFFSET
1,3
COMMENTS
Diagonal of A195962
EXAMPLE
Some solutions for n=5
..1..1..1..3..1....1..2..3..2..1....1..1..1..1..1....1..3..2..2..1
..2..2..1..1..1....1..2..4..2..1....3..2..2..2..3....1..4..3..3..1
..3..2..1..1..3....1..2..2..2..1....2..2..3..2..2....1..2..2..2..1
..2..2..1..1..1....1..4..3..3..1....3..4..3..4..3....1..2..4..2..1
..1..1..1..3..1....1..3..2..2..1....1..1..1..1..1....1..2..3..2..1
CROSSREFS
Sequence in context: A109334 A370916 A085728 * A374806 A127194 A083705
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 25 2011
STATUS
approved