A296989 Number of n X 7 0..1 arrays with each 1 adjacent to 3, 4 or 5 king-move neighboring 1's.

1, 77, 1653, 12601, 639327, 26724927, 702794334, 24416753991, 892243428330, 29462787050221, 998361846643570, 34570695463676885, 1178226645017158477, 40142564452672581992, 1374478845809683086730, 46978226057419131275321

Offset

1,2

Comments

Column 7 of A296990.

Links

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

Example

Some solutions for n=4
..0..0..0..0..0..1..1. .0..0..0..1..1..0..0. .0..0..0..0..0..1..1
..0..0..0..0..0..1..1. .0..1..1..0..1..1..0. .0..0..1..0..0..1..1
..0..1..1..0..1..0..1. .0..1..1..0..1..1..1. .1..1..1..1..0..1..1
..0..1..1..1..1..1..0. .0..0..1..1..0..1..0. .1..1..0..1..1..0..0

Crossrefs

Cf. A296990.

Sequence in context: A217643 A205603 A073931 * A105253 A339248 A219126

Adjacent sequences: A296986 A296987 A296988 * A296990 A296991 A296992

Keyword

nonn

Author

R. H. Hardin, Dec 22 2017

Status

approved