A316739 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 346, 1219, 1124, 75856, 625739, 1906293, 44561267, 422993842, 2539600147, 33711145569, 331084966219, 2630126872937, 28405473469627, 277468107061640, 2468954376951486, 24732249716697144, 239659403403154971

Offset

1,1

Comments

Column 7 of A316740.

Links

R. H. Hardin, Table of n, a(n) for n = 1..145

Example

Some solutions for n=5
..0..1..1..0..0..1..0. .0..1..0..0..0..1..1. .0..1..1..1..0..1..1
..0..1..0..0..1..1..0. .1..1..0..0..1..0..0. .1..1..0..1..0..0..1
..0..0..0..0..0..0..0. .0..0..0..0..0..0..0. .1..0..1..1..1..1..1
..0..1..0..0..1..0..0. .0..1..0..1..0..1..0. .0..1..1..0..1..1..1
..0..0..0..1..1..0..1. .1..1..0..0..0..0..0. .0..1..1..0..0..1..0

Crossrefs

Cf. A316740.

Sequence in context: A304148 A305488 A305088 * A079485 A193504 A158363

Adjacent sequences: A316736 A316737 A316738 * A316740 A316741 A316742

Keyword

nonn

Author

R. H. Hardin, Jul 11 2018

Status

approved