OFFSET
1,2
COMMENTS
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..1000
FORMULA
EXAMPLE
PROG
(PARI) [k-1-eulerphi(k) | k<-[2..100], !isprime(k)] \\ Andrew Howroyd, Apr 26 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
Wolfdieter Lang, Aug 30 2017
EXTENSIONS
Terms a(51) and beyond from Andrew Howroyd, Apr 26 2020
STATUS
approved