1,2

p^(k(4k-1)) and p^(k(4k+1)) are members of the sequence, where p is prime. p^2*q are members of sequence, where p and q are prime and p^2>q>p.

Table of n, a(n) for n=1..40.

Cf. A072498, A072510.

Sequence in context: A045523 A006983 A283148 * A218558 A181735 A161415

Adjacent sequences: A072324 A072325 A072326 * A072328 A072329 A072330

nonn

Vladimir Baltic, Aug 04 2002

approved