0,2
Cf. A041860.
Sequence in context: A002351 A042035 A030980 * A042377 A032831 A047180
Adjacent sequences: A041858 A041859 A041860 * A041862 A041863 A041864
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).