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A147482 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 11011-01110-00100 pattern in any orientation. 0
1, 1, 1, 1, 7, 1, 32, 9, 247, 55, 7527, 1429, 368384, 45879, 31665405, 2855306, 5088454688, 352337351, 1569436037179, 84647830613, 948743940167332, 37496914297413, 1098189573005175931, 32036480319505329 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..24.

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0

.1.0.0.0.0.0.0.1

.1.1.0.0.0.0.1.1

.0.1.1.0.0.1.1.0

.1.1.0.0.0.0.1.1

.1.0.0.0.0.0.0.1

CROSSREFS

Sequence in context: A228498 A084181 A002678 * A171770 A050402 A027643

Adjacent sequences:  A147479 A147480 A147481 * A147483 A147484 A147485

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified November 28 01:24 EST 2021. Contains 349396 sequences. (Running on oeis4.)