OFFSET
1,8
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
PROG
(PARI) A336551(n) = { my(f=factor(n)); for(i=1, #f~, f[i, 2] = f[i, 2]-1); (factorback(f)-1); };
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jul 28 2020
STATUS
approved