OFFSET
1,4
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..16384
Antti Karttunen, Data supplement: n, a(n) computed for n = 1..100000
FORMULA
PROG
(PARI) A322820(n) = if(isprime(n), 1, if(1>=omega(n), n, my(f=factor(n), y=#f~); if(1==f[y, 2], f[y, 2] = 0; f[y-1, 2]++); factorback(f)));
(PARI)
A006530(n) = if(n>1, vecmax(factor(n)[, 1]), 1);
(PARI)
A000265(n) = (n>>valuation(n, 2));
A064989(n) = {my(f); f = factor(n); if((n>1 && f[1, 1]==2), f[1, 2] = 0); for (i=1, #f~, f[i, 1] = precprime(f[i, 1]-1)); factorback(f)};
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Dec 27 2018
STATUS
approved