A146863 Number of n X n binary arrays with all ones connected only in a 1101-1111 pattern in any orientation.

1, 1, 1, 25, 193, 1061, 19265, 384413, 13738057, 820631045, 59715152817, 7053435949925, 1320192686294957, 358386777091843317

Offset

1,4

Links

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

Example

Maximal 8 X 8 example
.1.1.0.0.0.0.1.1
.1.0.0.0.0.0.1.1
.1.1.0.0.0.0.0.1
.1.1.0.0.0.0.1.1
.0.0.1.1.1.1.0.0
.0.0.1.0.1.1.0.0
.1.1.0.1.0.0.0.0
.1.1.1.1.0.0.0.0

Crossrefs

Sequence in context: A209851 A330126 A243209 * A101775 A017222 A271535

Adjacent sequences: A146860 A146861 A146862 * A146864 A146865 A146866

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved