A240635 Number of nX7 0..1 arrays with no element equal to exactly three horizontal or vertical neighbors, with new values 0..1 introduced in row major order

64, 2785, 77269, 2319211, 69637692, 2097636322, 63213422873, 1904782876182, 57392644533582, 1729241310772922, 52101748475053643, 1569814590240364270, 47298161023632144868, 1425082784232120727380, 42937417098934211565980

Offset

1,1

Comments

Column 7 of A240636

Links

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

Example

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

Crossrefs

Sequence in context: A302825 A303518 A240483 * A297372 A283696 A283128

Adjacent sequences: A240632 A240633 A240634 * A240636 A240637 A240638

Keyword

nonn

Author

R. H. Hardin, Apr 09 2014

Status

approved