A146453 - OEIS

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A146453

Number of n X n binary arrays with all ones connected only in a 1100-0111-0010 pattern in any orientation.

1, 1, 1, 17, 57, 533, 9707, 296859, 11801387, 824137549, 100677999633, 19742028440127

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Maximal 8 X 8 example

.0.1.0.0.0.0.1.0

.0.1.1.0.0.1.1.0

.1.1.0.0.0.0.1.1

.1.0.1.1.0.0.0.1

.0.0.0.1.1.1.0.0

.0.0.1.0.1.0.1.0

.0.1.1.1.0.1.1.1

.1.1.0.0.1.1.0.0

CROSSREFS

Sequence in context: A147239 A264473 A146578 * A146046 A048508 A020879

Adjacent sequences: A146450 A146451 A146452 * A146454 A146455 A146456

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved