Number of distinct magnitudes of the nonzero sums of distinct n-th roots of unity.
A108381
Number of distinct magnitudes of the nonzero sums of distinct n-th roots of unity.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =3a(6) =8a(7) =9a(8) =16a(9) =17a(10) =62a(11) =23a(12) =186a(13) =95a(14) =280a(15) =240a(16) =1963a(17) =225a(18) =6830a(19) =1091
External references
- oeis: A108381