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a(n) = SUM(A162371(k): A000124(n-1) <= k <= A000217(n));
subsequence of A008578.
Table of n, a(n) for n=1..42.
Sequence in context: A119456 A257582 A053755 * A146781 A107199 A048209
Adjacent sequences: A162370 A162371 A162372 * A162374 A162375 A162376
Reinhard Zumkeller, Jul 02 2009