Number of irreducible polynomials over F_2 of degree at most n.

Terms

a(0) =2a(1) =3a(2) =5a(3) =8a(4) =14a(5) =23a(6) =41a(7) =71a(8) =127a(9) =226a(10) =412a(11) =747a(12) =1377a(13) =2538a(14) =4720a(15) =8800a(16) =16510a(17) =31042a(18) =58636a(19) =111013a(20) =210871a(21) =401428a(22) =766150a(23) =1465020a(24) =2807196a(25) =5387991a(26) =10358999a(27) =19945394a(28) =38458184a(29) =74248451