A218174 Number of n X n arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 n X n array

4, 28, 2936, 851332, 1661620524, 15513264742256

Offset

1,1

Comments

Diagonal of A218181

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A084594 A334598 A000838 * A220756 A202713 A129290

Adjacent sequences: A218171 A218172 A218173 * A218175 A218176 A218177

Keyword

nonn

Author

R. H. Hardin Oct 22 2012

Status

approved