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Table of n, a(n) for n=0..68.
Cf. A004086, A030101-A030108, A056960-A056963.
Sequence in context: A010881 A190600 A053832 * A043271 A278063 A062759
Adjacent sequences: A056958 A056959 A056960 * A056962 A056963 A056964
Henry Bottomley, Jul 18 2000