A283665 Number of nX7 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, 264, 376594, 15351085, 387076338, 7883014615, 140913280266, 2326415367317, 36332244115510, 545100865508798, 7936175643012759, 112838485787858089, 1574294739609758663, 21624782468994463462, 293202298856554538798

Offset

1,2

Comments

Column 7 of A283666.

Links

R. H. Hardin, Table of n, a(n) for n = 1..42

Example

Some solutions for n=2
..0..1..1..1..1..1..0. .0..0..1..1..1..1..1. .0..0..0..0..0..0..0
..0..1..0..1..0..1..1. .0..1..1..0..1..0..1. .0..1..0..0..1..0..1

Crossrefs

Cf. A283666.

Sequence in context: A116501 A289745 A289639 * A151602 A345595 A345854

Adjacent sequences: A283662 A283663 A283664 * A283666 A283667 A283668

Keyword

nonn

Author

R. H. Hardin, Mar 13 2017

Status

approved