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Table of n, a(n) for n=1..57.
Cf. A191980, A191982, A191983.
Sequence in context: A029805 A082007 A064417 * A131975 A057474 A270139
Adjacent sequences: A191978 A191979 A191980 * A191982 A191983 A191984
Clark Kimberling, Jun 20 2011