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Table of n, a(n) for n=1..39.
Cf. A076653, A155985.
Sequence in context: A293040 A250136 A141480 * A128993 A061450 A067974
Adjacent sequences: A155983 A155984 A155985 * A155987 A155988 A155989
Zak Seidov, Feb 01 2009