A283664 Number of nX6 0..1 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 40, 50383, 1712052, 34315385, 554477876, 7883014615, 103248064080, 1277923264206, 15187234735252, 175029185554048, 1969339446313184, 21736136283750397, 236148970771867578, 2532016084062519461

Offset

1,2

Comments

Column 6 of A283666.

Links

R. H. Hardin, Table of n, a(n) for n = 1..102

Example

Some solutions for n=3
..0..0..0..1..0..0. .0..0..0..1..0..1. .0..0..0..0..1..1. .0..1..0..0..0..1
..0..1..0..1..1..0. .0..0..0..0..1..1. .0..1..0..0..1..0. .0..1..0..1..0..0
..0..1..1..0..1..1. .0..0..1..0..0..0. .1..1..0..0..1..0. .0..0..0..1..1..0

Crossrefs

Cf. A283666.

Sequence in context: A214138 A239168 A167061 * A159404 A323489 A266157

Adjacent sequences: A283661 A283662 A283663 * A283665 A283666 A283667

Keyword

nonn

Author

R. H. Hardin, Mar 13 2017

Status

approved