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A162127
Number of n X n symmetric 0..2 arrays with rows, considered as 3-ary numbers, in strictly increasing order
1
3, 12, 124, 3084, 185372, 27575084, 10417956924, 10221185826892, 26504730763164764, 184169429458588129644, 3466700754295862842687612, 178350026183671506033012278924, 25264252738038225534160060999871644
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A208937 A209065 A124153 * A073987 A317802 A138392
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 25 2009
STATUS
approved