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A147064 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 01010-11111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 2, 1, 4, 1, 6, 1, 14, 3, 43, 10, 133, 29, 604, 96, 3118, 333, 17061, 1304, 110347, 7679, 888486, 55914 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,7
LINKS
EXAMPLE
Maximal 9 X 9 example
.0.0.0.0.0.0.0.0.0
.0.0.1.1.1.1.1.0.0
.0.1.0.1.0.1.0.1.0
.0.1.1.0.0.0.1.1.0
.0.1.0.0.0.0.0.1.0
.0.1.1.0.0.0.1.1.0
.0.1.0.1.0.1.0.1.0
.0.0.1.1.1.1.1.0.0
.0.0.0.0.0.0.0.0.0
CROSSREFS
Sequence in context: A147389 A147008 A147365 * A147228 A176729 A300509
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified June 24 22:33 EDT 2024. Contains 373690 sequences. (Running on oeis4.)