0,1
Cf. A041625.
Sequence in context: A066854 A059138 A117735 * A174075 A186122 A034725
Adjacent sequences: A041621 A041622 A041623 * A041625 A041626 A041627
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).