A189189 Number of n X n binary arrays without the pattern 0 0 1 vertically or antidiagonally

2, 16, 316, 15326, 1579664, 367115337, 184841938568, 209311662962608, 525679279319545840, 2979655033608039508606, 37875187935027408625277140, 1087648851912447148168100296827, 70353152136567154798416885107484140

Offset

1,1

Comments

Diagonal of A189196

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

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

Crossrefs

Sequence in context: A264658 A223675 A189058 * A188867 A282787 A137729

Adjacent sequences: A189186 A189187 A189188 * A189190 A189191 A189192

Keyword

nonn

Author

R. H. Hardin Apr 18 2011

Status

approved