A266136 Number of 6Xn integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself.

1, 544, 9083, 19750, 326145, 13689944, 325554385, 3901509248, 74115297377, 2013995093008, 45630856227503, 832426433462416

Offset

1,2

Comments

Row 6 of A266131.

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=4
..0..1..1..0....0..0..0..0....0..0..0..1....1..0..2..1....2..1..1..0
..2..2..1..1....1..2..2..1....1..2..2..1....0..2..0..1....0..1..1..2
..2..1..0..2....1..1..2..3....0..2..1..0....1..0..2..0....2..3..2..2
..2..1..1..2....0..0..2..0....0..2..0..2....1..2..2..1....2..1..1..0
..1..0..1..2....0..2..0..1....3..2..1..1....0..2..0..1....2..1..0..2
..0..2..0..1....1..0..1..1....0..2..1..0....0..0..1..1....1..0..1..1

Crossrefs

Cf. A266131.

Sequence in context: A051305 A204732 A204725 * A204724 A168564 A223376

Adjacent sequences: A266133 A266134 A266135 * A266137 A266138 A266139

Keyword

nonn

Author

R. H. Hardin, Dec 21 2015

Status

approved