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A227986
Antiharmonic mean of the divisors of A227771(n) (the n-th antiharmonic number that is not a square).
3
13, 35, 85, 91, 119, 185, 255, 245, 255, 313, 455, 481, 425, 455, 629, 559, 841, 845, 741, 765, 1183, 841, 793, 1355, 1015, 833, 935, 1295, 1547, 1105, 1443, 1505, 1445, 2197, 1785, 1799, 2735, 2041, 3315, 2405, 2135, 2523, 3523, 2873, 2755, 3605, 2191, 4165
OFFSET
1,1
COMMENTS
For comments, references, example, and crossrefs, see A227771.
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = sigma_2(A227771(n))/sigma_1(A227771(n)).
CROSSREFS
Sequence in context: A115161 A063300 A368361 * A228024 A243383 A242578
KEYWORD
nonn
AUTHOR
Jonathan Sondow, Aug 02 2013
STATUS
approved