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A164858
a(n) = largest prime dividing A164857(n). a(1)=1.
2
1, 2, 3, 2, 5, 3, 7, 2, 5, 13, 13, 3, 19, 7, 5, 2, 23, 3, 31, 7, 37, 37, 37, 3, 43, 43, 43, 43, 43, 5, 53, 2, 61, 61, 7, 3, 61, 73, 73, 73, 73, 79, 79, 83, 83, 83, 83, 3, 89, 89, 89, 89, 89, 3, 103, 103, 103, 103, 103, 5, 113, 113, 13, 2, 113, 113, 113, 131, 131, 131, 131, 3, 139
OFFSET
1,2
COMMENTS
A164857(n) is divisible by every prime from 2 to A164858(n).
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Aug 28 2009
EXTENSIONS
Extended by Ray Chandler, Mar 14 2010
STATUS
approved