OFFSET
1,2
COMMENTS
For all n, A147551(n) = phi(a(n)).
LINKS
Max Alekseyev, Table of n, a(n) for n = 1..31
EXAMPLE
phi(10)=4 and there is no 2-digit number t such that phi(t)<4 so a(2)=10.
phi(102)=32 and there is no 3-digit number t such that phi(t)<32 also phi(100) and phi(101) are greater than 32, so a(3)=102.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Farideh Firoozbakht, Nov 22 2008
EXTENSIONS
a(11)-a(31) from Max Alekseyev, Feb 02 2012, Feb 14 2018
STATUS
approved