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A121716 is a subsequence.
Table of n, a(n) for n=1..60.
Sequence in context: A278816 A043072 A165451 * A217072 A106518 A158304
Adjacent sequences: A121714 A121715 A121716 * A121718 A121719 A121720
Reinhard Zumkeller, Aug 18 2006