A207093 Number of 7Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 0 1 vertically

54, 2916, 88465, 3500117, 134515416, 4992838052, 189659424011, 7170730063393, 270475089293918, 10224494565608260, 386259141164549753, 14590174277869464225, 551225314435579230372, 20824003807957963946688

Offset

1,1

Comments

Row 7 of A207088

Links

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

Example

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

Crossrefs

Sequence in context: A189700 A206893 A188761 * A188990 A189200 A042405

Adjacent sequences: A207090 A207091 A207092 * A207094 A207095 A207096

Keyword

nonn

Author

R. H. Hardin Feb 15 2012

Status

approved