|
|
A081812
|
|
If n = p_1^e_1 * ... * p_k^e_k, p_1 < ... < p_k primes, then a(n) = Max{ Max(p_i, e_i) }.
|
|
1
|
|
|
2, 3, 2, 5, 3, 7, 3, 3, 5, 11, 3, 13, 7, 5, 4, 17, 3, 19, 5, 7, 11, 23, 3, 5, 13, 3, 7, 29, 5, 31, 5, 11, 17, 7, 3, 37, 19, 13, 5, 41, 7, 43, 11, 5, 23, 47, 4, 7, 5, 17, 13, 53, 3, 11, 7, 19, 29, 59, 5, 61, 31, 7, 6, 13, 11, 67, 17, 23, 7, 71, 3, 73, 37, 5, 19, 11, 13, 79, 5, 4, 41, 83, 7, 17
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
2,1
|
|
LINKS
|
|
|
MAPLE
|
a:= n-> max(ifactors(n)[2]):
|
|
PROG
|
(PARI) a(n)=local(f); if(n<1, 0, f=factor(n); vecmax(vector(matsize(f)[1], k, max(f[k, 1], f[k, 2]))))
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|