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Table of n, a(n) for n=1..67.
Cf. A025060, A025063.
Sequence in context: A124203 A155085 A077665 * A175034 A030498 A079933
Adjacent sequences: A025059 A025060 A025061 * A025063 A025064 A025065
a(46)-a(56), a(58)-a(61), a(63)-a(67) corrected by Gionata Neri, Sep 06 2016