A184678 Number of (n+1)X(n+1) binary arrays with every 2X2 subblock singular

10, 128, 3360, 221968, 31817360, 10876933264, 8344809419152, 14901599172048528, 60581954550463205264, 567946901826257621019792, 12186523252504462055625831824, 601019440996497914601529636314768

Offset

1,1

Comments

Diagonal of A184686

Links

R. H. Hardin, Table of n, a(n) for n = 1..15

Example

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

Crossrefs

Sequence in context: A234284 A296379 A183538 * A360941 A007819 A054050

Adjacent sequences: A184675 A184676 A184677 * A184679 A184680 A184681

Keyword

nonn

Author

R. H. Hardin Jan 19 2011

Status

approved