Sylvester-Jacobsthal cyclotomic numbers.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =11a(5) =7a(6) =43a(7) =17a(8) =57a(9) =31a(10) =683a(11) =13a(12) =2731a(13) =127a(14) =331a(15) =257a(16) =43691a(17) =73a(18) =174763a(19) =205a(20) =5419a(21) =2047a(22) =2796203a(23) =241a(24) =1016801a(25) =8191a(26) =261633a(27) =3277a(28) =178956971a(29) =151