A221109 Number of n X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops

0, 0, 8, 3706, 11678172, 326416281638, 82293038769560932

Offset

1,3

Comments

Diagonal of A221114

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A295170 A087925 A125540 * A221243 A351409 A024113

Adjacent sequences: A221106 A221107 A221108 * A221110 A221111 A221112

Keyword

nonn

Author

R. H. Hardin Jan 02 2013

Status

approved