A146674 - OEIS

A146674

Number of n X n binary arrays with all ones connected only in a 1100-0111-1100 pattern in any orientation.

1, 1, 1, 9, 25, 93, 633, 8913, 136370, 2447483, 66801664, 2869431585, 170625522480, 13470400903777

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

OFFSET

1,4

LINKS

EXAMPLE

Maximal 8 X 8 example

.1.1.0.0.0.1.0.1

.0.1.1.1.0.1.1.1

.1.1.0.0.0.0.1.0

.0.0.0.0.0.0.1.0

.0.0.0.0.0.0.0.0

.1.1.0.0.1.1.0.0

.0.1.1.1.0.1.1.1

.1.1.0.0.1.1.0.0

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved