OFFSET
1,1
FORMULA
EXAMPLE
At 10^1 there are 4 composites: 4+6+8+9=27. The rounded mean is 27\4=7. there are 2 composites over 7: 8 and 9, so a(1)=2.
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Enoch Haga, Mar 07 2004
EXTENSIONS
Terms a(9)-a(15) from Max Alekseyev, Aug 15 2013
STATUS
approved