A209678 Number of n X n 0..3 arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order

1, 14, 608, 246038, 166075313, 1008907523438, 10215188674804688, 930859067991577148438, 141374220951220779418945313, 193240888262699902868270874023438

Offset

1,2

Comments

Column 2 of A209684

Links

R. H. Hardin, Table of n, a(n) for n = 1..42

Example

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

Crossrefs

Sequence in context: A291121 A279294 A282053 * A280676 A209103 A283780

Adjacent sequences: A209675 A209676 A209677 * A209679 A209680 A209681

Keyword

nonn

Author

R. H. Hardin Mar 11 2012

Status

approved