A147051 Number of n X n binary arrays with all ones connected only in a 0100-1101-0111 pattern in any orientation.

1, 1, 1, 17, 49, 237, 3143, 61525, 1581763, 52804881, 3069718147, 283686428107, 37198650400311

Offset

1,4

Links

Table of n, a(n) for n=1..13.

Example

Maximal 8 X 8 example
.0.1.1.1.0.0.0.0
.1.1.0.1.0.0.1.1
.0.1.0.0.0.0.0.1
.0.0.0.0.0.1.1.1
.0.1.0.0.0.0.1.0
.1.1.1.0.0.1.0.0
.1.0.0.0.1.1.0.1
.1.1.0.0.0.1.1.1

Crossrefs

Sequence in context: A147201 A146775 A147217 * A146855 A146666 A146730

Adjacent sequences: A147048 A147049 A147050 * A147052 A147053 A147054

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved