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A147325 Number of n X n binary arrays with all ones connected only in a 00100-00100-11111-00100 pattern in any orientation. 0
1, 1, 1, 1, 9, 25, 57, 349, 3222, 35623, 520596, 9629183, 240941564, 8486368727, 407009202584 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

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

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.0.1.0.0

.0.1.0.1.1.1.1.1

.0.1.0.0.0.1.0.0

.1.1.1.1.0.1.0.0

.0.1.0.0.1.0.0.0

.0.1.0.0.1.0.0.0

.0.0.1.1.1.1.1.0

.0.0.0.0.1.0.0.0

CROSSREFS

Sequence in context: A124702 A113829 A147338 * A147368 A147497 A147353

Adjacent sequences:  A147322 A147323 A147324 * A147326 A147327 A147328

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified October 21 04:00 EDT 2021. Contains 348141 sequences. (Running on oeis4.)