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Table of n, a(n) for n=1..56.
Cf. A131863, A131855, A131857, A131862.
Sequence in context: A048590 A168415 A199635 * A179443 A080756 A189833
Adjacent sequences: A131861 A131862 A131863 * A131865 A131866 A131867
Reinhard Zumkeller, Jul 22 2007