A266036 Number of 4Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.

1, 263, 4659, 118489, 8260441, 408513208, 18310081145, 893274482801, 43871509629713, 2125306114047014, 103023996018095153, 5001737585430438515, 242795570513177880054, 11784713223275028672523, 571987904595320449315439

Offset

1,2

Comments

Row 4 of A266033.

Links

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

Example

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

Crossrefs

Cf. A266033.

Sequence in context: A239685 A108823 A229480 * A157828 A065570 A345586

Adjacent sequences: A266033 A266034 A266035 * A266037 A266038 A266039

Keyword

nonn

Author

R. H. Hardin, Dec 20 2015

Status

approved