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Table of n, a(n) for n=1..40.
Index entries for sequences related to powerful numbers
7688=2^3*31^2 is powerful and 8867 is prime.
Sequence in context: A045071 A007824 A235056 * A088112 A232510 A206344
Adjacent sequences: A115683 A115684 A115685 * A115687 A115688 A115689
Giovanni Resta, Jan 31 2006