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A266134
Number of 4Xn integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself.
1
1, 61, 385, 572, 3851, 44623, 347576, 1650710, 12360130, 106235031, 807578953, 5406175833, 41246496374, 328408364493, 2509089355110, 18435763834038, 141054581587168, 1100340622468942, 8442342552511565, 63751061176641632
OFFSET
1,2
COMMENTS
Row 4 of A266131.
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..0....0..0..0..0....1..0..1..2....1..2..0..1....2..1..1..0
..2..3..2..2....1..2..2..0....1..1..1..2....1..0..2..0....0..1..1..2
..2..1..1..0....1..1..0..1....1..1..0..1....2..1..0..0....1..2..2..1
..2..1..0..1....1..0..2..0....1..0..2..0....2..1..2..0....0..0..0..0
CROSSREFS
Cf. A266131.
Sequence in context: A189174 A304062 A305454 * A305019 A316683 A264845
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 21 2015
STATUS
approved