OFFSET
1,2
LINKS
FORMULA
PROG
(PARI) A354093(n) = { my(f=factor(n)); for(k=1, #f~, if(2==(f[k, 1]%3), for(i=1+primepi(f[k, 1]), oo, if(2==(prime(i)%3), f[k, 1]=prime(i); break)))); sigma(factorback(f)); };
CROSSREFS
KEYWORD
nonn,mult
AUTHOR
Antti Karttunen, May 17 2022
STATUS
approved