A217272 Number of nX7 arrays of occupancy after each element moves to some horizontal or vertical neighbor

32, 142129, 402494400, 1117092569476, 3080781263731464, 8491624540729737796, 23397344246732649325860

Offset

1,1

Comments

Column 7 of A217273

Links

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

Example

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

Crossrefs

Sequence in context: A017093 A159412 A201987 * A017189 A159414 A094814

Adjacent sequences: A217269 A217270 A217271 * A217273 A217274 A217275

Keyword

nonn

Author

R. H. Hardin Sep 29 2012

Status

approved