A147194 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation.

1, 1, 1, 1, 1, 1, 1, 1, 63, 109, 781, 1575, 12401, 27045, 346129, 858707, 43136869, 130994019, 11875535419, 43413437829, 3832077399895, 16507726912431, 1910337965009389, 9542878365158887, 2142686650051542137

Offset

1,9

Links

Table of n, a(n) for n=1..25.

Example

Maximal 9 X 9 example
.1.0.0.0.0.0.0.0.1
.1.1.1.0.0.0.1.1.1
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0
.0.0.0.0.0.0.0.0.0
.1.0.0.0.0.0.0.0.1
.1.1.1.0.0.0.1.1.1
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0

Crossrefs

Sequence in context: A118157 A257897 A261108 * A147398 A166394 A038839

Adjacent sequences: A147191 A147192 A147193 * A147195 A147196 A147197

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved