0,2
Cf. A000522, A008290.
Sequence in context: A195501 A075768 A135442 * A173367 A090086 A007535
Adjacent sequences: A086892 A086893 A086894 * A086896 A086897 A086898
nonn
Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 22 2003