1,1

Conjecture: There are infinitely many primes and semiprimes in this sequence.

Table of n, a(n) for n=1..61.

1537 is a term because 1536/3 = 512 = 2^9.

Cf. A052126.

Sequence in context: A062545 A020735 A329391 * A241835 A279914 A123910

Adjacent sequences: A108141 A108142 A108143 * A108145 A108146 A108147

easy,nonn

Jason Earls, Jul 23 2005

approved