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A152484
Odd numbers which are not the sum of an even semiprime and an odd semiprime.
2
1, 3, 5, 7, 9, 11, 17, 33
OFFSET
1,2
COMMENTS
No more terms < 10^9. Conjectured to be complete.
EXAMPLE
33 is in this sequence because no even semiprime and odd semiprime sum to 33. 35 is not in this sequence because the sum of 10 (even semiprime) and 25 (odd semiprime) is 35.
CROSSREFS
KEYWORD
fini,nonn
AUTHOR
Donovan Johnson, Dec 06 2008
STATUS
approved