A147062 - OEIS

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A147062

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 01010-11111 pattern in any orientation.

1, 1, 1, 1, 1, 3, 10, 29, 96, 333, 1304, 7679, 55914, 466003, 4423899, 47937378, 606115023, 9533642435, 182376263152, 4158250315340, 111416233674712, 3515485102434381

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,6

LINKS

Table of n, a(n) for n=1..22.

EXAMPLE

Maximal 8 X 8 example

.0.1.1.1.1.1.0.0

.1.0.1.0.1.0.0.0

.1.1.0.0.0.0.0.1

.1.0.0.0.0.0.1.1

.1.1.0.0.0.0.0.1

.1.0.0.0.0.0.1.1

.0.0.0.1.0.1.0.1

.0.0.1.1.1.1.1.0

CROSSREFS

Sequence in context: A147363 A147226 A301879 * A293155 A146384 A166174

Adjacent sequences: A147059 A147060 A147061 * A147063 A147064 A147065

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved