Number of monic irreducible polynomials over GF(4) with zero trace.

Terms

a(0) =1a(1) =0a(2) =5a(3) =12a(4) =51a(5) =160a(6) =585a(7) =2016a(8) =7280a(9) =26112a(10) =95325a(11) =349180a(12) =1290555a(13) =4792320a(14) =17895679a(15) =67104768a(16) =252645135a(17) =954422560a(18) =3616814565a(19) =13743842916a(20) =52357696365a(21) =199911014400a(22) =764877654105