A221118 Number of 6Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops

0, 0, 1769, 1424745, 709142453, 326416281638, 143089274586815, 62066225367961944

Offset

1,3

Comments

Row 6 of A221114

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A135795 A206201 A237900 * A155023 A176478 A187132

Adjacent sequences: A221115 A221116 A221117 * A221119 A221120 A221121

Keyword

nonn

Author

R. H. Hardin Jan 02 2013

Status

approved