OFFSET
1,2
COMMENTS
Generated by k: 1, 2, 3, 5, 6, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 66, 67, ...
Subsequence of A246445.
EXAMPLE
121 is in this sequence because (3^k - 3)/k = (3^6 - 3)/6 = 121.
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Sep 09 2014
STATUS
approved