A316419 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

64, 101, 484, 3496, 25312, 192752, 1459806, 11066456, 84120192, 639206832, 4856035371, 36894816262, 280338552147, 2130055864039, 16184372459315, 122971160807318, 934353279611767, 7099351068366439, 53941888768991850

Offset

1,1

Comments

Column 7 of A316420.

Links

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

Example

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

Crossrefs

Cf. A316420.

Sequence in context: A304603 A305339 A304925 * A306165 A317382 A331455

Adjacent sequences: A316416 A316417 A316418 * A316420 A316421 A316422

Keyword

nonn

Author

R. H. Hardin, Jul 02 2018

Status

approved