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A147385 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 10001-11111-00100 pattern in any orientation. 0
1, 1, 1, 1, 7, 1, 25, 9, 112, 27, 3654, 849, 113270, 25721, 4179283 (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

.0.1.1.0.0.1.1.0

.0.1.0.0.0.0.1.0

.1.1.0.0.0.0.1.1

.0.1.0.0.0.0.1.0

.0.1.1.0.0.1.1.0

.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0

CROSSREFS

Sequence in context: A214686 A211790 A064051 * A147347 A183109 A082172

Adjacent sequences:  A147382 A147383 A147384 * A147386 A147387 A147388

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified February 26 15:26 EST 2021. Contains 341632 sequences. (Running on oeis4.)