0,2

Primitive means that 3 does not divide k. First differences of A173784. The values of k are in A173793.

Table of n, a(n) for n=0..38.

Sequence in context: A143269 A036817 A239962 * A116417 A271410 A196055

Adjacent sequences: A175172 A175173 A175174 * A175176 A175177 A175178

nonn

T. D. Noe, Feb 28 2010

approved