A304148 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.

8, 346, 359, 244, 5336, 12582, 6492, 218516, 748819, 579549, 8291908, 39661822, 47135028, 330726960, 1934112262, 3338471344, 14091326964, 90512988930, 210800741883, 658556633138, 4166065504607, 12259502266604, 33721700680339

Offset

1,1

Comments

Column 7 of A304149.

Links

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

Example

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

Crossrefs

Cf. A304149.

Sequence in context: A016875 A046244 A193225 * A305488 A305088 A316739

Adjacent sequences: A304145 A304146 A304147 * A304149 A304150 A304151

Keyword

nonn

Author

R. H. Hardin, May 07 2018

Status

approved