OFFSET

1,4

LINKS

Max A. Alekseyev, Computing the Inverses, their Power Sums, and Extrema for Euler's Totient and Other Multiplicative Functions. Journal of Integer Sequences, Vol. 19 (2016), Article 16.5.2.

FORMULA

EXAMPLE

CROSSREFS

KEYWORD

nonn,more

AUTHOR

Donovan Johnson, Dec 19 2008

EXTENSIONS

a(12)-a(21) from Ray Chandler, Dec 28 2008

a(22)-a(24) from Max Alekseyev, Jan 27 2012

STATUS

approved