A209106 Number of 7Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors

365, 254496, 125526240, 57113932788, 25586970618660, 11437585318270860, 5112092569118325704, 2285013663964828552960, 1021387683873603848380972, 456557468966590708568722520, 204080223921705625484844604564

Offset

1,1

Comments

Row 7 of A209100

Links

R. H. Hardin, Table of n, a(n) for n = 1..158

Example

Some solutions for n=4
..0..1..0..2....0..1..0..2....0..0..0..0....0..0..0..1....0..0..0..1
..1..2..0..1....2..2..0..1....1..1..1..1....1..2..2..1....2..1..2..2
..1..0..1..2....0..1..2..1....2..2..0..1....2..0..1..2....0..2..0..0
..0..1..2..0....2..1..0..1....0..2..1..0....2..1..2..0....2..0..1..1
..0..2..0..1....1..2..2..2....1..2..0..1....1..2..0..1....2..1..2..1
..0..1..2..0....1..0..0..0....2..0..1..0....1..2..0..2....2..1..0..2
..1..2..0..1....0..1..2..1....0..1..2..0....2..0..1..2....1..2..1..2

Crossrefs

Sequence in context: A209099 A233017 A233081 * A208257 A223132 A199654

Adjacent sequences: A209103 A209104 A209105 * A209107 A209108 A209109

Keyword

nonn

Author

R. H. Hardin Mar 05 2012

Status

approved