OFFSET
1,10
COMMENTS
Number of ways of writing n=k+m where k primorial and m semiprime. The number of decompositions of n into an unordered sum of primorial number and semiprime number.
Conjecture: Average order is Theta(log log n). - Charles R Greathouse IV, May 25 2011
EXAMPLE
a(10)=2 because 10 = 6(primorial)+4(semiprime) = 1(primorial)+9(semiprime).
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Nov 04 2010
STATUS
approved