OFFSET
1,2
COMMENTS
Records in A179382(k(n)) = 1, 2, 3, 5, 6, 9, 10, 14, 18, 26, 29, ....
are located at k(n) = 1, 3, 5, 6, 7, 10, 13, 15, 19, 27, 30, 31,..
The current sequence is a simple transformation of this k(n) sequence.
Question: Are there any terms in the sequence with two or more distinct prime divisors?
Some very plausible conjectures: 1) The sequence consists of primes and squares of primes; 2) The set of squares is finite; 3) A prime p>=5 is in the sequence iff it has primitive root 2 (A001122) ; 4) There exists l such that, for n>l, A179383(n) =A139099(n+l) . [From Vladimir Shevelev , Jul 14 2010]
LINKS
Peter J. C. Moses, Table of n, a(n) for n = 1..8500
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, Jul 12 2010
EXTENSIONS
Definition rephrased and sequence extended by R. J. Mathar, Jul 13 2010
I made a change to Conjecture 4). - Vladimir Shevelev, Jul 18 2010
STATUS
approved