Number of primitive polynomials of degree n over GF(4).

Terms

a(0) =1a(1) =2a(2) =4a(3) =12a(4) =32a(5) =120a(6) =288a(7) =1512a(8) =4096a(9) =15552a(10) =48000a(11) =240064a(12) =552960a(13) =3439800a(14) =9483264a(15) =35640000a(16) =134217728a(17) =673699800a(18) =1451188224a(19) =9644765256a(20) =23685120000a(21) =115605729792a(22) =401556013056