A208702 Number of 7Xn 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 1 0 and 1 0 1 vertically

42, 1764, 12994, 101069, 1016258, 10934750, 126827983, 1510509752, 18362140414, 225190711489, 2778200486272, 34375762106094, 426142969015213, 5288048126067096, 65661068400142616, 815594644130811073

Offset

1,1

Comments

Row 7 of A208698

Links

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

Example

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

Crossrefs

Sequence in context: A207452 A208554 A207922 * A207471 A207523 A207258

Adjacent sequences: A208699 A208700 A208701 * A208703 A208704 A208705

Keyword

nonn

Author

R. H. Hardin Mar 01 2012

Status

approved