Numbers m such that Sum_{k=0..m-1} exp(2*Pi*i*k^3/m) != 0.

Terms

a(0) =1a(1) =4a(2) =7a(3) =8a(4) =9a(5) =13a(6) =19a(7) =25a(8) =27a(9) =28a(10) =31a(11) =32a(12) =36a(13) =37a(14) =43a(15) =49a(16) =52a(17) =56a(18) =61a(19) =63a(20) =64a(21) =67a(22) =72a(23) =73a(24) =76a(25) =79a(26) =91a(27) =97a(28) =100a(29) =103