OFFSET
1,5
COMMENTS
A companion sequence of A094269.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
PROG
(PARI) for(n=1, 1e4, my(i=eulerphi(n)); if(omega(2*i)==1, print1(logint(i, 2), ", ")))
CROSSREFS
KEYWORD
nonn
AUTHOR
Jianing Song, Sep 28 2018
STATUS
approved