A147193 Number of n X n binary arrays with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.

1, 1, 1, 5, 17, 45, 217, 1805, 29665, 431133, 7762019, 212346129, 9673476843, 601902869849

Offset

1,4

Links

Table of n, a(n) for n=1..14.

Example

Maximal 8 X 8 example
.0.0.0.1.0.0.0.1
.0.1.1.1.0.1.1.1
.0.1.0.0.0.1.0.0
.1.1.0.0.1.1.0.0
.0.0.0.1.0.0.0.1
.0.1.1.1.0.1.1.1
.0.1.0.0.0.1.0.0
.1.1.0.0.1.1.0.0

Crossrefs

Sequence in context: A271122 A147050 A147397 * A271302 A147043 A146264

Adjacent sequences: A147190 A147191 A147192 * A147194 A147195 A147196

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved