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a(n) = GCD(A007503(n), A064840(n)).
Table of n, a(n) for n=1..96.
Cf. A009205, A009191, A009194.
Sequence in context: A162977 A032174 A212267 * A238454 A025228 A132945
Adjacent sequences: A087798 A087799 A087800 * A087802 A087803 A087804
Reinhard Zumkeller, Oct 11 2003