A218050 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..3 n X n array.

4, 4, 256, 9792, 2585920, 1673074136, 4273380556408, 34255740119092068

Offset

1,1

Comments

Diagonal of A218056.

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Cf. A218056.

Sequence in context: A264517 A080509 A063439 * A107052 A000790 A068556

Adjacent sequences: A218047 A218048 A218049 * A218051 A218052 A218053

Keyword

nonn

Author

R. H. Hardin, Oct 19 2012

Status

approved