Numbers k such that x^k + x^2 + 1 is irreducible over GF(2).

Terms

a(0) =1a(1) =3a(2) =5a(3) =11a(4) =21a(5) =29a(6) =35a(7) =93a(8) =123a(9) =333a(10) =845a(11) =4125a(12) =10437a(13) =10469a(14) =14211a(15) =20307a(16) =34115a(17) =47283a(18) =50621a(19) =57341a(20) =70331a(21) =80141