login
A137458
Prime(core(n)).
0
2, 3, 5, 2, 11, 13, 17, 3, 2, 29, 31, 5, 41, 43, 47, 2, 59, 3, 67, 11, 73, 79, 83, 13, 2, 101, 5, 17, 109, 113, 127, 3, 137, 139, 149, 2, 157, 163, 167, 29, 179, 181, 191, 31, 11, 199, 211, 5, 2, 3, 233, 41, 241, 13, 257, 43, 269, 271, 277, 47
OFFSET
1,1
COMMENTS
Prime(Squarefree part of n).
FORMULA
a(n) = A000040(A007913(n)).
CROSSREFS
Sequence in context: A021429 A262217 A124055 * A079369 A102867 A060383
KEYWORD
easy,nonn
AUTHOR
Jonathan Vos Post, Apr 19 2008
STATUS
approved