A147505 Number of n X n binary arrays with all ones connected only in a 11110-01111 pattern in any orientation.

1, 1, 1, 1, 25, 141, 673, 9515, 128879, 2409621, 79940355, 3359119595, 180620195725

Offset

1,5

Links

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

Example

Maximal 8 X 8 example
.0.0.0.1.1.1.1.0
.0.1.0.0.1.1.1.1
.1.1.0.0.0.0.0.0
.1.1.0.0.0.0.0.1
.1.1.0.0.0.0.1.1
.1.0.0.0.0.0.1.1
.0.1.1.1.1.0.1.1
.1.1.1.1.0.0.1.0

Crossrefs

Sequence in context: A233368 A240415 A113524 * A147360 A147223 A184057

Adjacent sequences: A147502 A147503 A147504 * A147506 A147507 A147508

Keyword

nonn

Author

R. H. Hardin

Status

approved