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A104650
Numbers of primes n needed to sum to semiprime without multiplicity.
0
2, 3, 4, 6, 5, 8, 7
OFFSET
1,1
EXAMPLE
a(3)=4 because 2*7=14=2+2+5+5;
a(4)=6 because 3*5=15=2+2+2+3+3+3.
CROSSREFS
Cf. A001358.
Sequence in context: A360633 A129258 A256988 * A083179 A123503 A123717
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Apr 21 2005
STATUS
approved