A184196 Half the number of (n+1)X9 binary arrays with no 2X2 subblock containing exactly one 1

19172, 2668339, 327471410, 42079740149, 5360172454105, 685056630399242, 87501032165288029, 11179084602659460821, 1428175394298048190822, 182458818788944483329317, 23310253102420729752412513

Offset

1,1

Comments

Column 8 of A184197

Links

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

Example

Some solutions for 3X9
..0..0..1..1..0..1..0..0..1....0..0..1..1..1..1..1..1..0
..0..0..1..1..0..1..0..0..1....0..0..1..0..1..1..1..1..1
..1..1..0..1..0..1..0..0..1....1..1..1..1..0..1..0..1..1

Crossrefs

Sequence in context: A367650 A015302 A249106 * A210316 A323966 A035925

Adjacent sequences: A184193 A184194 A184195 * A184197 A184198 A184199

Keyword

nonn

Author

R. H. Hardin Jan 10 2011

Status

approved