A304055 - OEIS

A304055

Number of nX5 0..1 arrays with every element unequal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

3, 51, 32, 155, 596, 1641, 5415, 30207, 124598, 500772, 2563187, 11938158, 52758745, 263350294, 1254691561, 5814881820, 28525545716, 136746379603, 646825243649, 3141919967404, 15089914588281, 72017487916126, 348004527241026

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 5 of A304058.

LINKS

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

EXAMPLE

Some solutions for n=5

..0..1..0..0..1. .0..0..0..0..0. .0..1..1..0..0. .0..0..0..1..0

..1..0..0..0..1. .1..0..0..1..1. .0..1..1..1..1. .1..0..0..0..1

..0..0..0..1..1. .0..0..0..1..1. .0..0..1..1..1. .0..0..0..1..1

..0..0..0..0..1. .1..0..0..0..1. .0..0..1..1..0. .1..0..0..1..1

..1..1..0..0..1. .0..1..0..0..1. .1..1..1..1..1. .1..0..0..0..0

CROSSREFS

Cf. A304058.

Sequence in context: A078674 A071094 A144987 * A305449 A304701 A316452

Adjacent sequences: A304052 A304053 A304054 * A304056 A304057 A304058

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 05 2018

STATUS

approved