A265957 Number of nX3 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors less than itself.

5, 235, 2031, 31940, 1002328, 17873307, 329266534, 7935241725, 162833269398, 3241416484700, 70876286404463, 1494327583037059, 30782640480213077, 653374627522113949, 13795598605189141491, 288087129209981654443

Offset

1,1

Comments

Column 3 of A265960.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..1..0..2....0..0..0....0..3..0....0..1..2....2..1..2....1..1..2....0..4..1
..4..1..2....3..8..2....0..8..4....1..1..5....4..0..5....4..0..3....0..8..0
..2..8..4....2..7..3....4..0..3....1..1..4....4..0..3....0..8..4....0..0..0
..0..2..0....1..0..0....0..0..2....1..0..1....1..3..1....0..0..0....2..5..0

Crossrefs

Cf. A265960.

Sequence in context: A142668 A330308 A157710 * A137085 A153025 A140518

Adjacent sequences: A265954 A265955 A265956 * A265958 A265959 A265960

Keyword

nonn

Author

R. H. Hardin, Dec 19 2015

Status

approved