A206882 Number of nX7 0..1 arrays avoiding 0 1 0 horizontally and 1 0 1 vertically

65, 4225, 105936, 2276625, 56006452, 1455584860, 37121455086, 933389392995, 23502259683934, 593617743280100, 14997131474172367, 378662158472685372, 9559398762581848139, 241351966658699739066, 6093846582029230600582

Offset

1,1

Comments

Column 7 of A206883

Links

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

Example

Some solutions for n=4
..1..0..0..1..1..0..1....0..1..1..1..0..1..1....1..0..1..1..1..0..0
..0..1..1..0..0..1..1....1..0..0..0..1..1..0....0..1..1..1..1..0..1
..0..0..0..0..0..1..1....0..0..0..0..1..1..0....0..1..1..1..0..1..1
..1..0..0..0..0..0..0....0..0..0..1..1..1..0....0..0..1..1..0..0..1

Crossrefs

Sequence in context: A188693 A206876 A188506 * A206999 A189615 A206888

Adjacent sequences: A206879 A206880 A206881 * A206883 A206884 A206885

Keyword

nonn

Author

R. H. Hardin Feb 13 2012

Status

approved