A207470 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically

26, 676, 3910, 23645, 119965, 491948, 2090927, 7990970, 29983194, 111123886, 398530787, 1431372629, 5073097036, 17882557521, 62951565198, 220461353120, 771854520770, 2697705853283, 9418337941471, 32876550226248, 114672698592869

Offset

1,1

Comments

Row 6 of A207467

Links

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

Example

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

Crossrefs

Sequence in context: A262271 A207921 A208701 * A207522 A207257 A207952

Adjacent sequences: A207467 A207468 A207469 * A207471 A207472 A207473

Keyword

nonn

Author

R. H. Hardin Feb 18 2012

Status

approved