0,2

R. J. Mathar, Table of n, a(n) for n = 1..200

Essentially the same as A000816.

Second column of array A103905.

Sequence in context: A099707 A163826 A000816 this_sequence A060079 A052502 A104134

Adjacent sequences: A000816 A000817 A000818 this_sequence A000820 A000821 A000822

nonn

N. J. A. Sloane (njas(AT)research.att.com).