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Table of n, a(n) for n=1..50.
a(1) = 7 because A122560 = 7 and 7^2 = 49 = 13 + 17 + 19 = p(6) + p(7) + p(8).
Cf. A122560, A070934.
Sequence in context: A156347 A221402 A065916 * A184121 A167768 A103630
Adjacent sequences: A122651 A122652 A122653 * A122655 A122656 A122657
Alexander Adamchuk, Sep 21 2006
More terms from Don Reble (djr(AT)nk.ca), Sep 22 2006