1,1
If p>3 is a prime then 3p is in this sequence if and only if p is in A001122.
Cf. A006694 A001122 A001134.
Sequence in context: A089967 A064900 A157137 this_sequence A140608 A085371 A162887
Adjacent sequences: A141227 A141228 A141229 this_sequence A141231 A141232 A141233
nonn
Vladimir Shevelev (shevelev(AT)bgu.ac.il), Jun 16 2008
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