A231955 Number of (n+1) X (6+1) 0..1 arrays with every element equal to some horizontal, vertical, diagonal or antidiagonal neighbor, with top left element zero.

3336, 438540, 49124582, 5764579644, 681107245458, 80362090509378, 9478886429386626, 1118102362833570026, 131889849650751094332, 15557531306545909207922, 1835142366306358341601450, 216470564915817761246494404, 25534534733545576720765387062, 3012014424038889936736679296936

Offset

1,1

Links

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

Example

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

Crossrefs

Column 6 of A231957.

Sequence in context: A043504 A251331 A261656 * A255657 A252188 A270338

Adjacent sequences: A231952 A231953 A231954 * A231956 A231957 A231958

Keyword

nonn

Author

R. H. Hardin, Nov 15 2013

Status

approved