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A147202 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0101-0111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 17, 27, 551, 1021, 8573, 22795, 308785, 847643, 66874367, 234921783, 36568568531, 162590981411, 22736801115521, 121607805121155, 25119564285391935 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

LINKS

Table of n, a(n) for n=1..21.

EXAMPLE

Maximal 8 X 8 example

.1.0.0.0.0.0.0.1

.1.1.1.0.0.1.1.1

.0.0.1.0.0.1.0.0

.0.1.1.0.0.1.1.0

.1.0.0.0.0.0.0.1

.1.1.1.0.0.1.1.1

.0.0.1.0.0.1.0.0

.0.1.1.0.0.1.1.0

CROSSREFS

Sequence in context: A033702 A000797 A171168 * A146776 A147218 A146856

Adjacent sequences:  A147199 A147200 A147201 * A147203 A147204 A147205

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified June 25 12:30 EDT 2022. Contains 354851 sequences. (Running on oeis4.)