A206865 - OEIS

A206865

Number of n X n 0..1 arrays avoiding 0 0 0 horizontally and 1 0 1 vertically

2, 16, 211, 7675, 728935, 159327093, 90497940567, 125050630010443, 420541855354109634, 3548467633453651525361, 73505549006944543732634211, 3751209136697289848938709033475

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Diagonal of A206871

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=4

..1..0..0..1....0..1..1..0....1..1..0..0....0..0..1..0....0..1..0..0

..1..1..0..0....1..1..0..0....0..1..1..1....0..0..1..0....1..0..1..1

..1..0..1..0....0..1..0..0....0..1..0..1....1..1..0..0....1..0..0..1

..1..0..0..1....0..1..1..0....1..1..0..1....1..1..0..0....1..0..0..1

CROSSREFS

Sequence in context: A004121 A188600 A206930 * A349313 A364399 A365568

Adjacent sequences: A206862 A206863 A206864 * A206866 A206867 A206868

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 13 2012

STATUS

approved