A281985 Number of nX5 0..1 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

0, 88, 7053, 89414, 938730, 8777256, 77613062, 662453196, 5524744676, 45282954978, 366289403756, 2932084060000, 23271806827672, 183398526112180, 1436667090150457, 11196246075282394, 86864485509399868, 671279748380068196

Offset

1,2

Comments

Column 5 of A281988.

Links

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

Example

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

Crossrefs

Cf. A281988.

Sequence in context: A137057 A197321 A004391 * A188613 A188606 A188850

Adjacent sequences: A281982 A281983 A281984 * A281986 A281987 A281988

Keyword

nonn

Author

R. H. Hardin, Feb 04 2017

Status

approved