A304898 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

3, 313, 1249, 13954, 107723, 946723, 8143342, 69406724, 599014812, 5123207331, 44024389889, 377614353499, 3240377259448, 27808393785858, 238604898145361, 2047584363969436, 17569996355263865, 150770179545151533

Offset

1,1

Comments

Column 5 of A304901.

Links

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

Example

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

Crossrefs

Cf. A304901.

Sequence in context: A222725 A303893 A305285 * A316580 A304594 A316380

Adjacent sequences: A304895 A304896 A304897 * A304899 A304900 A304901

Keyword

nonn

Author

R. H. Hardin, May 20 2018

Status

approved