A147060 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

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.

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

.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