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Ray Chandler, Table of n, a(n) for n = 1..582
Cf. A117677, A117679, A126098.
Sequence in context: A154550 A023202 A049436 * A056874 A280773 A109927
Adjacent sequences: A117007 A117008 A117009 * A117011 A117012 A117013
N. J. A. Sloane, Apr 15 2006
Definition revised by N. J. A. Sloane at the suggestion of Ray Chandler, Dec 05 2008