A240483 Number of nX7 0..1 arrays with no element equal to more than two horizontal or vertical neighbors, with new values 0..1 introduced in row major order

64, 2785, 62781, 1455916, 33986995, 790390105, 18384693920, 427494590110, 9939634161916, 231101074704277, 5373202640641305, 124929501621900185, 2904672009485156961, 67535056159015961509, 1570223417526208976239

Offset

1,1

Comments

Column 7 of A240484

Links

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

Example

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

Crossrefs

Sequence in context: A303021 A302825 A303518 * A240635 A297372 A283696

Adjacent sequences: A240480 A240481 A240482 * A240484 A240485 A240486

Keyword

nonn

Author

R. H. Hardin, Apr 06 2014

Status

approved