A266061 Number of 7Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than or equal to itself.

1, 18711, 660, 3922630, 66932934348, 17488967178845, 7819198018954698, 10484016801435669311, 10832285455576819877387, 8361971076554434945659918, 7140195547280432492606291169, 6567534043008191408279490228815

Offset

1,2

Comments

Row 7 of A266055.

Links

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

Example

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

Crossrefs

Cf. A266055.

Sequence in context: A237700 A248065 A283934 * A267028 A226150 A081416

Adjacent sequences: A266058 A266059 A266060 * A266062 A266063 A266064

Keyword

nonn

Author

R. H. Hardin, Dec 20 2015

Status

approved