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Table of n, a(n) for n=1..53.
Cf. A035014, A050622, A050623.
Sequence in context: A161338 A047847 A007783 * A025614 A182751 A057576
Adjacent sequences: A050622 A050623 A050624 * A050626 A050627 A050628
Patrick De Geest, Jun 15 1999.