0,2
Cf. A042448.
Sequence in context: A042809 A108413 A002531 * A046115 A089443 A191024
Adjacent sequences: A042446 A042447 A042448 * A042450 A042451 A042452
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).