A207517 Number of nX6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically

21, 441, 2307, 19909, 137719, 1048423, 7666319, 57113109, 422082891, 3130112351, 23173976223, 171676789835, 1271417316909, 9417475398607, 69753625991829, 516671332697659, 3826965495103137, 28346096345105751, 209956452832167033

Offset

1,1

Comments

Column 6 of A207519

Links

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

Example

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

Crossrefs

Sequence in context: A207562 A207417 A207389 * A207246 A208167 A207066

Adjacent sequences: A207514 A207515 A207516 * A207518 A207519 A207520

Keyword

nonn

Author

R. H. Hardin Feb 18 2012

Status

approved