A189104 Number of n X n binary arrays without the pattern 1 1 0 diagonally or antidiagonally

2, 16, 400, 23716, 3179520, 953574400, 627097603968, 924914073760000, 3050440754161147200, 22736725050654514945600, 381669581712710598918922368, 14487934510226746411430441441536, 1241349850723840266193329456972217472

Offset

1,1

Comments

Diagonal of A189111

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

Some solutions for 3X3
..0..1..0....1..0..1....0..1..0....0..1..1....0..0..0....0..0..1....1..1..0
..1..0..1....0..1..0....0..1..1....0..1..1....1..0..1....1..0..0....0..0..1
..1..0..0....1..0..1....0..0..0....1..1..0....0..1..1....0..0..1....0..0..0

Crossrefs

Sequence in context: A297368 A012752 A188904 * A347914 A181213 A283851

Adjacent sequences: A189101 A189102 A189103 * A189105 A189106 A189107

Keyword

nonn

Author

R. H. Hardin Apr 16 2011

Status

approved