A146365 - OEIS

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A146365

Number of n X n binary arrays with all ones connected only in a 0100-1111-0010 pattern in any orientation.

1, 1, 1, 9, 25, 125, 1323, 18755, 388143, 11998517, 573092271, 41661958269, 4471274578309, 730746269407465, 180950069008864743

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Maximal 8 X 8 example

.0.1.0.0.0.1.0.0

.0.1.1.0.1.1.1.1

.1.1.0.0.0.0.1.0

.0.1.0.0.0.0.0.0

.0.0.1.0.0.0.0.0

.0.0.1.1.0.0.1.0

.0.1.1.0.1.1.1.1

.0.0.1.0.0.1.0.0

CROSSREFS

Sequence in context: A139818 A373970 A227078 * A146373 A084605 A098773

Adjacent sequences: A146362 A146363 A146364 * A146366 A146367 A146368

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved