A217452 Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..2 n X 3 array.

9, 69, 613, 4361, 35067, 271863, 2122623, 16577231, 129398981, 1010161409, 7886865189, 61570433261, 480690831603, 3752745812035, 29297882184787, 228729463311571, 1785699822954649, 13941021624348057, 108838075075791297

Offset

1,1

Comments

Column 3 of A217457.

Links

R. H. Hardin, Table of n, a(n) for n = 1..43

Example

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

Crossrefs

Cf. A217457.

Sequence in context: A126530 A351810 A152273 * A193706 A275680 A167534

Adjacent sequences: A217449 A217450 A217451 * A217453 A217454 A217455

Keyword

nonn

Author

R. H. Hardin, Oct 03 2012

Status

approved