A221754 Number of nX7 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns

0, 171, 1680, 117067, 3143356, 128008894, 4330440582, 157745434617, 5576943832916, 199566264190831, 7105753950441404, 253532970709774991, 9038233928809650256

Offset

1,2

Comments

Column 7 of A221755

Links

Table of n, a(n) for n=1..13.

Example

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

Crossrefs

Sequence in context: A079654 A220869 A251329 * A036518 A187133 A185838

Adjacent sequences: A221751 A221752 A221753 * A221755 A221756 A221757

Keyword

nonn

Author

R. H. Hardin Jan 24 2013

Status

approved