OFFSET
1,5
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
FORMULA
a(n) = A062402(n) - n.
MATHEMATICA
Table[DivisorSigma[1, EulerPhi[n]]-n, {n, 90}] (* Harvey P. Dale, Mar 27 2019 *)
PROG
(PARI) A295302(n) = (sigma(eulerphi(n)) - n);
CROSSREFS
KEYWORD
sign
AUTHOR
Antti Karttunen, Nov 21 2017
STATUS
approved