A221119 Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops

0, 0, 10200, 27551817, 42873095694, 61164981824003, 82293038769560932

Offset

1,3

Comments

Row 7 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..2..0....0..1..0....0..1..0....0..2..1....0..2..1
..1..2..1....0..2..0....1..2..1....1..3..0....1..3..1....1..3..0....1..2..0
..0..1..1....1..2..0....1..3..1....1..2..1....1..3..0....0..0..0....0..2..0
..0..3..1....1..2..1....0..1..1....1..3..0....1..1..1....1..2..1....1..2..1
..0..2..1....1..2..1....0..2..0....1..2..0....0..1..0....0..3..0....0..2..1
..0..2..1....0..3..1....0..2..1....0..1..1....0..3..1....1..2..1....1..3..1
..1..2..0....0..1..0....1..2..0....1..2..0....1..2..0....1..2..0....0..1..0

Crossrefs

Sequence in context: A102326 A216262 A243410 * A105582 A243819 A258890

Adjacent sequences: A221116 A221117 A221118 * A221120 A221121 A221122

Keyword

nonn

Author

R. H. Hardin Jan 02 2013

Status

approved