A207466 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically

25, 625, 3399, 33393, 247631, 2090927, 16675001, 136803627, 1107817969, 9020755725, 73241249411, 595437782873, 4838237303149, 39325402627329, 319598032561739, 2597506529364501, 21110282812302019, 171568068317114121

Offset

1,1

Comments

Column 7 of A207467

Links

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

Example

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

Crossrefs

Sequence in context: A207499 A207241 A207110 * A207701 A207906 A208037

Adjacent sequences: A207463 A207464 A207465 * A207467 A207468 A207469

Keyword

nonn

Author

R. H. Hardin Feb 18 2012

Status

approved