A203406 Number of (n+2)X9 binary arrays avoiding patterns 000 and 111 in rows and columns

176238, 5327258, 119835492, 3024430930, 72950746702, 1791372199364, 43680343039806, 1068074622125486, 26087996711485980, 637482788594287422, 15574804643638753398, 380545025412528955724, 9297752486304073629542

Offset

1,1

Comments

Column 7 of A203407

Links

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

Example

Some solutions for n=3
..0..1..1..0..0..1..1..0..0....0..0..1..1..0..1..0..1..0
..1..0..0..1..0..0..1..0..0....1..0..0..1..1..0..0..1..1
..0..1..0..0..1..1..0..1..1....0..1..0..0..1..0..1..0..1
..0..0..1..0..0..1..1..0..0....0..0..1..0..0..1..0..1..0
..1..0..0..1..0..0..1..1..0....1..0..0..1..0..1..1..0..0

Crossrefs

Sequence in context: A262822 A273727 A368419 * A280447 A205177 A205276

Adjacent sequences: A203403 A203404 A203405 * A203407 A203408 A203409

Keyword

nonn

Author

R. H. Hardin Jan 01 2012

Status

approved