A316882 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

64, 752, 4121, 54613, 843479, 11791971, 180224021, 3018929955, 51534776482, 877296039204, 15194081872285, 265477983265435, 4625795530065981, 80883069730756434, 1417074349670845698, 24801777957824236638

Offset

1,1

Comments

Column 7 of A316883.

Links

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

Example

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

Crossrefs

Cf. A316883.

Sequence in context: A317035 A305910 A317152 * A317610 A264260 A190532

Adjacent sequences: A316879 A316880 A316881 * A316883 A316884 A316885

Keyword

nonn

Author

R. H. Hardin, Jul 15 2018

Status

approved