0,2
Cf. A000522, A008290.
Sequence in context: A073826 A159397 A024074 * A177503 A072021 A196627
Adjacent sequences: A086893 A086894 A086895 * A086897 A086898 A086899
nonn
Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 22 2003