A305366 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

8, 928, 2935, 21691, 163682, 1113793, 8803975, 65762626, 500606134, 3871912412, 29641292709, 228724010089, 1764555059811, 13604894698893, 105055149573703, 810888251301564, 6260188499559851, 48338915060171029, 373223482079535759

Offset

1,1

Comments

Column 7 of A305367.

Links

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

Example

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

Crossrefs

Cf. A305367.

Sequence in context: A189646 A348795 A304018 * A304958 A316640 A304696

Adjacent sequences: A305363 A305364 A305365 * A305367 A305368 A305369

Keyword

nonn

Author

R. H. Hardin, May 31 2018

Status

approved