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A147003 Number of n X n binary arrays with all ones connected only in a 00100-11111-00100 pattern in any orientation. 0
1, 1, 1, 1, 7, 21, 77, 479, 3600, 33995, 482862, 8547925, 199841936, 6379998757, 265761442757, 14715360146745 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

Maximal 8 X 8 example

.0.0.1.0.0.0.1.0

.1.1.1.1.1.0.1.0

.0.0.1.0.0.1.1.1

.0.1.0.0.0.0.1.0

.0.1.0.0.0.0.1.0

.1.1.1.0.0.1.0.0

.0.1.0.1.1.1.1.1

.0.1.0.0.0.1.0.0

CROSSREFS

Sequence in context: A153497 A146247 A241431 * A110683 A092785 A114902

Adjacent sequences:  A147000 A147001 A147002 * A147004 A147005 A147006

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified May 26 02:35 EDT 2019. Contains 323579 sequences. (Running on oeis4.)