1,2
Conjecture: A064413(a(n))=A002110(n) (primorial numbers), i.e. a(n) sets positions of primorial numbers in A064413.
Cf. A064413, A064742, A065203, A002110.
Sequence in context: A077244 A138899 A132595 this_sequence A001393 A046743 A121952
Adjacent sequences: A065201 A065202 A065203 this_sequence A065205 A065206 A065207
more,nonn
Vladeta Jovovic (vladeta(AT)eunet.rs), Oct 21 2001
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