A186050 Number of (n+2)X9 binary arrays with each 3X3 subblock singular

15426974, 2466606274, 384595851458, 47475070890310, 6706785849517148, 936496872238986044, 127786000491037137748, 17715530704266966622328, 2450423833775651684970790, 338228103996552089150434500

Offset

1,1

Comments

Column 7 of A186052

Links

R. H. Hardin, Table of n, a(n) for n = 1..16

Example

Some solutions for 4X9
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..1..1..1..0
..0..0..0..0..0..0..1..0..0....0..0..0..0..1..0..0..0..0
..0..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..1..1
..0..0..0..0..0..1..1..0..0....0..0..0..0..1..1..0..1..0

Crossrefs

Sequence in context: A128480 A273355 A207797 * A121840 A345618 A346335

Adjacent sequences: A186047 A186048 A186049 * A186051 A186052 A186053

Keyword

nonn

Author

R. H. Hardin Feb 11 2011

Status

approved