OFFSET
1,2
COMMENTS
LINKS
Max Alekseyev, Table of n, a(n) for n = 1..10000
Max Alekseyev, PARI scripts for various problems (see invphi.gp there).
EXAMPLE
a(5)=13 because if k>=13, then phi(k)>=5, but phi(12)=4.
PROG
(PARI) {m=0; for(n=1, 100, print1(m+1, ", "); trap(, 0, m=max(m, vecmax(invphi(n)))))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Jubin, May 21 2008
STATUS
approved