A304950 Number of n X 6 0..1 arrays with every element unequal to 0, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

1, 49, 58, 139, 468, 1916, 5296, 17450, 62128, 207139, 693887, 2374914, 8053735, 27274672, 92857712, 315536730, 1072011317, 3644889383, 12392444295, 42124232144, 143216096733, 486915951642, 1655379720756, 5628020733928

Offset

1,2

Comments

Column 6 of A304952.

Links

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

Example

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

Crossrefs

Cf. A304952.

Sequence in context: A345114 A090063 A143164 * A316618 A039472 A135145

Adjacent sequences: A304947 A304948 A304949 * A304951 A304952 A304953

Keyword

nonn

Author

R. H. Hardin, May 22 2018

Status

approved