A317570 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

32, 1576, 34152, 869466, 23570355, 611929512, 16121282196, 424656152144, 11163587715218, 293760158289423, 7728778787349586, 203330071676352641, 5349522522646684514, 140741382521970716959, 3702784618837723325033

Offset

1,1

Comments

Column 6 of A317572.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A317572.

Sequence in context: A305528 A317002 A316820 * A240459 A333603 A264074

Adjacent sequences: A317567 A317568 A317569 * A317571 A317572 A317573

Keyword

nonn

Author

R. H. Hardin, Jul 31 2018

Status

approved