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A085727
Number of semiprimes between n and 2n (inclusive).
1
0, 1, 2, 2, 3, 3, 3, 4, 4, 3, 4, 4, 6, 6, 5, 4, 6, 7, 8, 9, 9, 8, 8, 8, 9, 9, 8, 9, 11, 11, 12, 12, 13, 12, 12, 11, 12, 12, 12, 11, 12, 12, 14, 15, 15, 16, 17, 18, 18, 17, 17, 16, 17, 17, 17, 17, 17, 17, 17, 18, 20, 21, 20, 20, 21, 20, 22, 22, 22, 21, 23, 24, 26, 26, 25, 25, 25, 25, 26
OFFSET
1,3
CROSSREFS
Sequence in context: A072644 A179864 A070082 * A343005 A143442 A137300
KEYWORD
easy,nonn
AUTHOR
Jason Earls, Jul 20 2003
STATUS
approved