A196540 Number of n X 4 0..4 arrays with each element equal to the number its horizontal and vertical neighbors less than or equal to itself.

7, 461, 11200, 340286, 11955804, 492164626, 19551716726, 762304199460, 30102052972401, 1191511814763748, 47012897542283671, 1854609910206450722, 73234604023710412911, 2891416319601153583732, 114129499568282696605287

Offset

1,1

Comments

Column 4 of A196544.

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for n=5
..0..2..1..2....1..0..3..1....1..0..3..1....1..3..2..0....0..2..1..0
..1..4..1..2....2..4..3..0....3..1..2..0....1..2..1..2....1..4..4..2
..3..0..3..3....1..2..2..2....1..4..3..2....2..3..0..3....2..4..0..2
..0..3..4..1....0..4..3..3....1..4..1..0....1..4..2..3....0..3..1..3
..2..0..2..0....1..2..1..1....2..0..3..1....1..2..0..1....1..3..2..0

Crossrefs

Cf. A196544.

Sequence in context: A203060 A261479 A241363 * A215890 A160374 A127908

Adjacent sequences: A196537 A196538 A196539 * A196541 A196542 A196543

Keyword

nonn

Author

R. H. Hardin, Oct 03 2011

Status

approved