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A240700
Number of n X n 0..3 arrays with no element equal to a different number of vertical neighbors than horizontal neighbors, with new values 0..3 introduced in row major order
0
1, 5, 461, 332412, 1382959986, 33101173163229, 4557765530585124406, 3610256703332068651606556
OFFSET
1,2
COMMENTS
Diagonal of A240706
EXAMPLE
Some solutions for n=3
..0..1..2....0..1..2....0..1..2....0..1..2....0..1..1....0..1..2....0..1..0
..2..2..1....1..2..3....2..3..1....3..2..1....2..1..1....2..3..0....2..0..3
..2..2..0....3..0..2....3..1..3....1..3..2....0..3..2....0..1..2....1..2..0
CROSSREFS
Sequence in context: A332145 A144509 A375262 * A060855 A212043 A182403
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 10 2014
STATUS
approved