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A147016 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 01000-11111-00010 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 13, 13, 31, 31, 111, 111, 377, 377, 1545, 1545, 10231, 10231 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,15
LINKS
EXAMPLE
Maximal 15 X 15 example
.0.0.0.0.0.1.0.0.0.1.0.0.0.0.0
.0.0.0.0.0.1.1.0.1.1.0.0.0.0.0
.0.0.0.0.0.1.0.0.0.1.0.0.0.0.0
.0.0.0.0.1.1.0.0.0.1.1.0.0.0.0
.0.0.0.1.0.1.0.0.0.1.0.1.0.0.0
.1.1.1.1.1.0.0.0.0.0.1.1.1.1.1
.0.1.0.0.0.0.0.0.0.0.0.0.0.1.0
.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0
.0.1.0.0.0.0.0.0.0.0.0.0.0.1.0
.1.1.1.1.1.0.0.0.0.0.1.1.1.1.1
.0.0.0.1.0.1.0.0.0.1.0.1.0.0.0
.0.0.0.0.1.1.0.0.0.1.1.0.0.0.0
.0.0.0.0.0.1.0.0.0.1.0.0.0.0.0
.0.0.0.0.0.1.1.0.1.1.0.0.0.0.0
.0.0.0.0.0.1.0.0.0.1.0.0.0.0.0
CROSSREFS
Sequence in context: A168392 A147280 A147494 * A146370 A164927 A094904
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)