0,1
n=5: sigma[2401]=1+7+49+343+2401=2801=6.466+5
Cf. A074384, A000203.
Sequence in context: A102778 A135544 A051724 * A011508 A195429 A158552
Adjacent sequences: A084300 A084301 A084302 * A084304 A084305 A084306
easy,fini,full,nonn
Labos E. (labos(AT)ana.sote.hu), Jun 02 2003