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A147195 Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1100-0100-0111-0001 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 17, 17, 45, 45, 217, 217, 1805, 1805, 29665, 29665, 431133, 431133, 7762019, 7762019, 212346129, 212346129 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,9
LINKS
EXAMPLE
Maximal 9 X 9 example
.0.0.1.1.0.1.1.0.0
.0.0.1.0.0.0.1.0.0
.1.1.1.0.0.0.1.1.1
.1.0.0.0.0.0.0.0.1
.0.0.0.0.0.0.0.0.0
.1.0.0.0.0.0.0.0.1
.1.1.1.0.0.0.1.1.1
.0.0.1.0.0.0.1.0.0
.0.0.1.1.0.1.1.0.0
CROSSREFS
Sequence in context: A146860 A146185 A147399 * A147045 A146065 A146242
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified July 16 10:51 EDT 2024. Contains 374345 sequences. (Running on oeis4.)