A147413 Number of n X n binary arrays with all ones connected only in a 1001-1111-0110 pattern in any orientation.

1, 1, 1, 9, 25, 81, 559, 6336, 95947, 1549728, 36536673, 1325100728, 67670472497, 4585160114565, 421563951431911

Offset

1,4

Links

Table of n, a(n) for n=1..15.

Example

Maximal 8 X 8 example
.0.0.0.0.0.0.1.1
.0.1.1.0.0.1.1.0
.1.1.0.0.0.1.1.0
.1.1.0.0.0.0.1.1
.0.1.1.0.1.1.0.0
.1.0.0.1.0.1.1.0
.1.1.1.1.0.1.1.0
.0.1.1.0.1.1.0.0

Crossrefs

Sequence in context: A110970 A322939 A141583 * A066137 A269662 A147428

Adjacent sequences: A147410 A147411 A147412 * A147414 A147415 A147416

Keyword

nonn

Author

R. H. Hardin

Status

approved