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A092802
Mean (rounded) of composite numbers below 10^n.
6
7, 53, 510, 5047, 50279, 501844, 5012809, 50094049, 500720912, 5005703554, 50046261712, 500382762350, 5003219541311, 50027458290511, 500236958622730, 5002065769284422, 50018168989895296, 500161047150051653, 5001437349858735047, 50012907314623137795, 500116546694296773760
OFFSET
1,1
COMMENTS
As with the primes in A092800, each succeeding term seems a close multiple of that preceding.
FORMULA
Add composites and divide total by the count of composites below 10^n
Floor((10^n(10^n + 1)/2 - A046731(n) - 1)/(10^n - A006880(n) - 1)) - Charles R Greathouse IV, Sep 25 2008
EXAMPLE
a(3)=510 because the mean of composites below 10^3 is 510.087
CROSSREFS
Sequence in context: A120272 A057180 A137612 * A062207 A073564 A372939
KEYWORD
easy,nonn
AUTHOR
Enoch Haga, Mar 06 2004
EXTENSIONS
More terms from Charles R Greathouse IV, Sep 25 2008
STATUS
approved