A304956 Number of n X 5 0..1 arrays with every element unequal to 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

3, 120, 371, 2080, 11282, 60568, 334906, 1852576, 10208628, 56476986, 312311660, 1726835768, 9548532077, 52807525484, 292024665946, 1614879713366, 8930532980138, 49386528451002, 273109909878597, 1510322716604761

Offset

1,1

Comments

Column 5 of A304959.

Links

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

Example

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

Crossrefs

Cf. A304959.

Sequence in context: A375935 A304016 A305364 * A316638 A227480 A304694

Adjacent sequences: A304953 A304954 A304955 * A304957 A304958 A304959

Keyword

nonn

Author

R. H. Hardin, May 22 2018

Status

approved