OFFSET
1,7
COMMENTS
a(n) = Major index (1st definition) of the total numbers <=n and prime to n i.e., phi(n).
LINKS
Indranil Ghosh, Table of n, a(n) for n = 1..10000
Indranil Ghosh, Python Program to generate the sequence
EXAMPLE
For n = 10, phi(n) = 4 and major index (1st definition) of 4 = 1. So a(n) = 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Indranil Ghosh, Jan 07 2017
STATUS
approved