Number of degree-n irreducible polynomials over GF(2) with trace = 1 and subtrace = 0.

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =3a(6) =4a(7) =8a(8) =15a(9) =24a(10) =48a(11) =85a(12) =155a(13) =297a(14) =541a(15) =1024a(16) =1935a(17) =3626a(18) =6912a(19) =13107a(20) =24940a(21) =47709a(22) =91136a(23) =174760a(24) =335626a(25) =645120a(26) =1242904a(27) =2396745a(28) =4627915a(29) =8948385