1,1

Conjecture. The terms of the sequence have only one prime divisor; moreover,

p^3 is in the sequence if and only if p is in A001122.

Cf. A006694 A002326 A001122 A001133.

Sequence in context: A117103 A124940 A114446 this_sequence A121614 A046340 A046316

Adjacent sequences: A141226 A141227 A141228 this_sequence A141230 A141231 A141232

nonn

Vladimir Shevelev (shevelev(AT)bgu.ac.il), Jun 15 2008