A147084 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 10001-11111 pattern in any orientation.

1, 1, 1, 1, 15, 5, 49, 17, 413, 69, 21097, 4957, 597365, 167417, 46479458, 10293687, 14209217427, 1780809651, 3335818025813, 361684117509, 1853338605046214, 151849401091613, 2485203548826248423, 163350200078891767

Offset

1,5

Links

Table of n, a(n) for n=1..24.

Example

Maximal 8 X 8 example
.1.1.0.0.0.0.1.1
.1.0.0.0.0.0.0.1
.1.0.0.0.0.0.0.1
.1.0.0.0.0.0.0.1
.1.1.0.0.0.0.1.1
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0
.0.0.0.0.0.0.0.0

Crossrefs

Sequence in context: A040215 A335879 A147422 * A147361 A147224 A147060

Adjacent sequences: A147081 A147082 A147083 * A147085 A147086 A147087

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved