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1,1

This sequence is a reordering (with duplication) of A006512.

Table of n, a(n) for n=1..81.

Cf. A002808, A006512, A119689.

Sequence in context: A122271 A011205 A167133 * A215732 A010718 A247872

Adjacent sequences: A144564 A144565 A144566 * A144568 A144569 A144570

nonn,easy,less

Juri-Stepan Gerasimov, Jan 04 2009

Comment, correction, and extension by Charles R Greathouse IV, Mar 29 2010

approved