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A147060 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01010-11111 pattern in any orientation. 0
1, 1, 1, 1, 15, 5, 62, 17, 658, 107, 29884, 6487, 1659614, 327257, 258702145, 30361384, 78969868093, 6884718923, 35857505148152, 2535313045666, 36904503247120904, 2064458801309399, 80141381157325372643 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..23.

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

.1.0.0.0.0.0.0.1

.1.1.0.0.0.0.1.1

.1.0.0.0.0.0.0.1

CROSSREFS

Sequence in context: A147084 A147361 A147224 * A110791 A241361 A249996

Adjacent sequences:  A147057 A147058 A147059 * A147061 A147062 A147063

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified August 11 15:10 EDT 2022. Contains 356066 sequences. (Running on oeis4.)