0,2
Cf. A042044.
Sequence in context: A048788 A143914 A041123 * A096506 A119155 A119195
Adjacent sequences: A042042 A042043 A042044 * A042046 A042047 A042048
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).