A146381 - OEIS

A146381

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

1, 1, 1, 13, 69, 528, 7033, 141904, 4322355, 197401178, 13868215311, 1479290583806, 238998054376606

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

LINKS

EXAMPLE

Maximal 8 X 8 example

.1.0.1.1.1.1.0.0

.1.1.0.1.1.0.0.0

.1.1.0.0.0.0.0.1

.1.0.0.1.0.0.1.1

.0.1.0.1.1.0.1.1

.1.1.0.1.1.0.0.1

.1.1.0.1.0.1.1.0

.0.1.0.0.1.1.1.1

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved