A146586 Number of n X n binary arrays with all ones connected only in a 0110-1111-0100 pattern in any orientation.

1, 1, 1, 17, 49, 301, 4891, 104131, 3555075, 179509487, 14641599949, 2046712162355, 431012136746009, 147708888913757129

Offset

1,4

Links

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

Example

Maximal 8 X 8 example
.0.1.0.0.0.0.1.0
.1.1.1.0.0.1.1.1
.1.1.0.0.0.0.1.1
.0.1.0.0.0.0.1.0
.0.0.1.0.0.0.0.0
.0.1.1.1.0.0.1.0
.0.1.1.0.1.1.1.1
.0.0.1.0.0.1.1.0

Crossrefs

Sequence in context: A146666 A146730 A146862 * A146626 A146634 A146831

Adjacent sequences: A146583 A146584 A146585 * A146587 A146588 A146589

Keyword

nonn

Author

R. H. Hardin, Nov 04 2008

Status

approved