A146799 Number of n X n binary arrays with all 1's connected only in a 0110-1100-0111 pattern in any orientation.

1, 1, 1, 17, 49, 169, 2727, 71937, 1640171, 45826977, 2915886117, 297797651503, 38753311297385, 7181311313092177

Offset

1,4

Links

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

Example

Maximal 8 X 8 example:
.0.1.1.0.0.0.0.1
.0.0.1.1.0.1.0.1
.1.1.1.0.0.1.1.1
.0.0.0.0.0.0.1.0
.0.0.0.0.0.0.0.0
.0.1.1.0.0.1.1.0
.1.1.0.0.1.1.0.0
.0.1.1.1.0.1.1.1

Crossrefs

Sequence in context: A146791 A126371 A342609 * A147201 A146775 A147217

Adjacent sequences: A146796 A146797 A146798 * A146800 A146801 A146802

Keyword

nonn,more

Author

R. H. Hardin, Nov 04 2008

Status

approved