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Table of n, a(n) for n=1..56.
Sequence in context: A058937 A130518 A001840 * A025693 A117930 A090632
Adjacent sequences: A022791 A022792 A022793 * A022795 A022796 A022797
An incorrect g.f. was deleted by N. J. A. Sloane, Sep 16 2009
Missing a(55)=554 inserted by Sean A. Irvine, May 27 2019