OFFSET
0,1
LINKS
Ray Chandler, Table of n, a(n) for n = 0..1000
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
a(n) = Max{k; A000010(k) = 10^n}.
EXAMPLE
n=3: a(3)=3750 because InvPhi(1000) = {1111, 1255, 1375, 1875, 2008, 2222, 2500, 2510, 2750, 3012, 3750}.
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Jun 13 2002
EXTENSIONS
More terms from Max Alekseyev, Apr 26 2010
STATUS
approved