OFFSET
1,4
LINKS
FORMULA
PROG
(PARI)
A003961(n) = { my(f = factor(n)); for(i=1, #f~, f[i, 1] = nextprime(f[i, 1]+1)); factorback(f); };
memoA376404 = Map();
CROSSREFS
KEYWORD
sign
AUTHOR
Antti Karttunen, Nov 15 2024
STATUS
approved