0,3
Cf. A041666.
Sequence in context: A158108 A158258 A065527 * A132684 A032074 A197662
Adjacent sequences: A041664 A041665 A041666 * A041668 A041669 A041670
nonn,cofr,easy
N. J. A. Sloane (njas(AT)research.att.com).