**a(n) = the number of aperiodic subsets S of the n-th roots of 1 with zero sum (i.e. there is no r different from 1 such that r*S=S).**

*1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 24, 0, 6, 0, 0, 0, 236, 0, 0, 0, 18, 0, 3768, 0*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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