A189775 Number of nX5 binary arrays without the pattern 1 0 0 1 diagonally, vertically or horizontally

28, 784, 21952, 418550, 7767740, 136521398, 2475199422, 44835555921, 819898395901, 14951509967629, 272888201632045, 4974385897878190, 90702815452479941, 1653551877098790941, 30149461492149942101

Offset

1,1

Comments

Column 5 of A189779

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 6X5
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0
..0..0..1..0..0....0..1..0..0..0....1..0..0..0..1....0..0..0..0..1
..0..0..1..0..0....0..0..0..0..0....0..0..1..0..0....1..1..0..0..0
..1..1..0..1..1....0..1..0..0..0....0..1..0..1..0....0..0..0..0..1
..1..1..1..0..0....0..1..0..1..0....0..0..1..0..0....1..0..0..0..1

Crossrefs

Sequence in context: A189901 A189907 A189339 * A189157 A267732 A009972

Adjacent sequences: A189772 A189773 A189774 * A189776 A189777 A189778

Keyword

nonn

Author

R. H. Hardin Apr 27 2011

Status

approved