Numbers such that (-1)Sigma(m)*UnitarySigma(m)= k*UnitaryPhi(m)*m for some integer k.
A123181
Numbers such that (-1)Sigma(m)*UnitarySigma(m)= k*UnitaryPhi(m)*m for some integer k.
Terms
- a(0) =1a(1) =6a(2) =312a(3) =495a(4) =990a(5) =20520a(6) =23664a(7) =64416a(8) =13063050
External references
- oeis: A123181