a(0) = 1, a(1) = 4; for n >= 2 a(n) is the number of degree-n monic reducible polynomials over GF(4), i.e., a(n) = 4^n - A027377(n).

A058819

a(0) = 1, a(1) = 4; for n >= 2 a(n) is the number of degree-n monic reducible polynomials over GF(4), i.e., a(n) = 4^n - A027377(n).

Terms

    a(0) =1a(1) =4a(2) =10a(3) =44a(4) =196a(5) =820a(6) =3426a(7) =14044a(8) =57376a(9) =233024a(10) =943822a(11) =3813004a(12) =15379476a(13) =61946644a(14) =249262666a(15) =1002159108a(16) =4026535936a(17) =16169288644a(18) =64901742816a(19) =260410648684

External references