A146594 Number of n X n binary arrays with all ones connected only in a 1000-1000-1111 pattern in any orientation.

1, 1, 1, 17, 77, 549, 6061, 126381, 3867721, 164716773, 10591661407, 1060530627501

Offset

1,4

Links

Table of n, a(n) for n=1..12.

Example

Maximal 8 X 8 example
.1.1.1.1.0.1.1.1
.1.0.0.0.0.0.0.1
.1.0.0.0.0.0.0.1
.0.0.0.0.0.1.0.1
.1.0.0.0.0.1.0.0
.1.0.1.1.1.1.0.1
.1.0.0.0.0.0.0.1
.1.1.1.0.1.1.1.1

Crossrefs

Sequence in context: A296113 A231779 A063494 * A202138 A357740 A124898

Adjacent sequences: A146591 A146592 A146593 * A146595 A146596 A146597

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved