login
A085641
Smallest prime == 1 (mod p*q*...*k) where p, q, ..., k are all the distinct prime divisors of n. Or, smallest prime == 1 (mod the largest squarefree divisor of n).
1
2, 3, 7, 3, 11, 7, 29, 3, 7, 11, 23, 7, 53, 29, 31, 3, 103, 7, 191, 11, 43, 23, 47, 7, 11, 53, 7, 29, 59, 31, 311, 3, 67, 103, 71, 7, 149, 191, 79, 11, 83, 43, 173, 23, 31, 47, 283, 7, 29, 11, 103, 53, 107, 7, 331, 29, 229, 59, 709, 31, 367, 311, 43, 3, 131, 67, 269, 103, 139
OFFSET
2,1
COMMENTS
All the numbers having the same set of prime divisors are mapped to the same prime.
FORMULA
a(n) = A034694(A007947(n)).
CROSSREFS
Cf. A007947.
Sequence in context: A160727 A187152 A086508 * A086516 A281962 A358415
KEYWORD
easy,nonn
AUTHOR
Amarnath Murthy, Jason Earls, Jul 11 2003
STATUS
approved