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, 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

R. H. Hardin, Table of n, a(n) for n = 1..210

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

Adjacent sequences: A266131 A266132 A266133 * A266135 A266136 A266137

Keyword

nonn

Author

R. H. Hardin, Dec 21 2015

Status

approved