A281935 Number of nX7 0..1 arrays with no element equal 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, 792, 252630, 19173138, 1216849775, 66997966477, 3373640120486, 160302681247552, 7305243645203574, 322502538593946476, 13886918284916239844, 586084028294727276075, 24329530708226606150926

Offset

1,2

Comments

Column 7 of A281936.

Links

R. H. Hardin, Table of n, a(n) for n = 1..43

Example

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

Crossrefs

Cf. A281936.

Sequence in context: A184491 A140909 A282461 * A037146 A045246 A095812

Adjacent sequences: A281932 A281933 A281934 * A281936 A281937 A281938

Keyword

nonn

Author

R. H. Hardin, Feb 02 2017

Status

approved