OFFSET
1,2
FORMULA
a(n) = ((n^n-1)/(n-1))*phi(n), n>1. - Vladeta Jovovic, Feb 28 2004
MATHEMATICA
Table[Apply[Plus, Table[EulerPhi[m^j], {j, 1, m}]], {m, 1, 15}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Feb 12 2004
EXTENSIONS
More terms from Robert G. Wilson v, Feb 12 2004
STATUS
approved