A147481 Number of n X n binary arrays with all ones connected only in a 11011-01110-00100 pattern in any orientation.

1, 1, 1, 1, 13, 49, 332, 3073, 36531, 597879, 14127501, 454449581, 20354788308, 1267965991925

Offset

1,5

Links

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

Example

Maximal 8 X 8 example
.0.0.0.1.1.0.1.1
.0.0.0.0.1.1.1.0
.0.0.0.0.0.1.0.1
.1.0.0.0.0.0.1.1
.1.1.0.0.0.1.1.0
.0.1.1.0.1.0.1.1
.1.1.0.1.1.1.0.1
.1.0.1.1.0.1.1.0

Crossrefs

Sequence in context: A146782 A320469 A074014 * A245138 A197663 A274784

Adjacent sequences: A147478 A147479 A147480 * A147482 A147483 A147484

Keyword

nonn

Author

R. H. Hardin

Status

approved