A188904 Number of n X n binary arrays without the pattern 0 1 0 diagonally or antidiagonally

2, 16, 400, 21904, 2895584, 1139265009, 1206854973408, 2985549816834225, 18186473807187428754, 295962659559743287398400, 12785274595721911779350877195, 1397108287594488818133966259024144

Offset

1,1

Comments

Diagonal of A188910

Links

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

Example

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

Crossrefs

Sequence in context: A012388 A297368 A012752 * A189104 A347914 A181213

Adjacent sequences: A188901 A188902 A188903 * A188905 A188906 A188907

Keyword

nonn

Author

R. H. Hardin Apr 13 2011

Status

approved