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A146413 Number of n X n binary arrays with all ones connected only in a 1000-1111-1000 pattern in any orientation. 0
1, 1, 1, 9, 29, 137, 1117, 13601, 257342, 6436423, 229848194, 12134224575, 927491358387 (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

.1.1.1.0.1.1.1.0

.0.1.0.1.0.1.0.0

.0.1.0.1.0.1.0.0

.0.1.0.1.0.1.0.0

.0.0.1.1.1.0.1.0

.1.0.0.0.0.0.1.0

.1.1.1.1.0.0.1.0

.1.0.0.0.0.1.1.1

CROSSREFS

Sequence in context: A056258 A147282 A146602 * A146054 A321588 A173262

Adjacent sequences: A146410 A146411 A146412 * A146414 A146415 A146416

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified March 26 05:52 EDT 2023. Contains 361529 sequences. (Running on oeis4.)