A146602 - OEIS

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A146602

Number of n X n binary arrays with all ones connected only in a 1000-1111-0001 pattern in any orientation.

1, 1, 1, 9, 29, 137, 1079, 13093, 250867, 6233403, 218750525, 11495073517, 872282781415

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Maximal 8 X 8 example

.0.1.0.0.0.0.0.0

.0.1.1.1.1.0.1.1

.0.0.0.0.1.0.1.0

.0.0.0.0.0.0.1.0

.0.0.0.1.0.1.1.0

.1.1.1.1.0.0.0.1

.1.0.0.0.1.1.1.1

.0.0.0.0.1.0.0.0

CROSSREFS

Sequence in context: A101141 A056258 A147282 * A146413 A146054 A321588

Adjacent sequences: A146599 A146600 A146601 * A146603 A146604 A146605

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved