A265997 Number of 7Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.

1, 1, 182, 21, 1, 101, 422, 182, 157, 705, 1843, 2314, 4008, 10135, 19799, 33914, 65289, 137630, 279692, 520563, 1024841, 2188861, 4505552, 9236561, 20249904, 46319712, 105176183, 245657647, 607107735, 1544002056, 3915562512, 10204790125

Offset

1,3

Comments

Row 7 of A265991.

Links

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

Example

Some solutions for n=4
..1..2..2..1....1..3..1..1....1..3..1..1....1..3..1..1....1..3..1..1
..1..1..1..1....1..1..4..2....1..1..4..2....1..1..3..2....1..1..4..2
..1..3..3..1....1..3..3..1....1..3..3..1....1..3..4..2....1..3..3..2
..1..1..1..1....2..4..1..1....1..1..1..1....2..3..3..2....2..4..3..2
..1..3..3..1....1..1..3..1....1..4..3..1....2..4..3..1....2..3..4..1
..2..4..1..1....1..3..1..1....2..3..1..1....2..3..1..1....1..1..1..1
..1..1..3..1....1..1..3..1....1..1..3..1....1..1..3..1....1..2..2..1

Crossrefs

Cf. A265991.

Sequence in context: A066626 A185824 A324271 * A204378 A054572 A054985

Adjacent sequences: A265994 A265995 A265996 * A265998 A265999 A266000

Keyword

nonn

Author

R. H. Hardin, Dec 19 2015

Status

approved