OFFSET
1,1
COMMENTS
LINKS
EXAMPLE
phi(n) = 6 iff n is in { 7, 9, 14, 18 }.
Hence: a(7) = 9, a(9) = 14, a(14) = 18, a(18) = 7.
PROG
(C) // See Links section for C program.
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul Tek, Sep 25 2015
STATUS
approved