A284074 Number of nX7 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.

0, 858, 300008, 45973823, 5950703039, 690497721277, 74965549398304, 7768358494151582, 777826092240727932, 75850300642037184690, 7242483614668041755074, 679759485223346193229835

Offset

1,2

Comments

Column 7 of A284075.

Links

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

Example

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

Crossrefs

Cf. A284075.

Sequence in context: A046394 A163304 A252237 * A345548 A345801 A183628

Adjacent sequences: A284071 A284072 A284073 * A284075 A284076 A284077

Keyword

nonn

Author

R. H. Hardin, Mar 19 2017

Status

approved