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A072459
Largest prime divisor of even nontotients.
1
7, 13, 17, 19, 5, 31, 17, 37, 19, 43, 5, 47, 7, 19, 59, 61, 31, 67, 71, 73, 19, 11, 79, 17, 29, 13, 31, 47, 97, 101, 103, 107, 109, 23, 13, 59, 11, 61, 41, 31, 127, 43, 19, 137, 139, 71, 13, 29, 149, 151, 19, 11, 157, 53, 23, 163, 167, 13, 17, 7, 59, 181, 13, 37, 17, 47
OFFSET
1,1
LINKS
FORMULA
a(n) = A006530(A005277(n)).
EXAMPLE
12th even nontotient is 94=2*47, so a(12)=47.
CROSSREFS
Sequence in context: A102797 A233062 A205686 * A158813 A144426 A233518
KEYWORD
nonn
AUTHOR
Labos Elemer, Jun 19 2002
STATUS
approved