OFFSET
1,1
FORMULA
EXAMPLE
a(1)=45 because that is the sum of the odd composites (9+15+21=45) less than or equal to 21.
CROSSREFS
KEYWORD
nonn
AUTHOR
Enoch Haga, Oct 14 2007
EXTENSIONS
Better definition from R. J. Mathar, Oct 28 2007
a(9)-a(14) from Hiroaki Yamanouchi, Jul 06 2014
STATUS
approved