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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

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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: A380156 A296379 A183538 * A360941 A007819 A054050

Adjacent sequences: A184675 A184676 A184677 * A184679 A184680 A184681

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 19 2011

STATUS

approved

URL: https://oeis.org/A184678

⇱ A184678 - OEIS