Number of irreducible polynomials of degree n over GF(4); dimensions of free Lie algebras.

A027377

Number of irreducible polynomials of degree n over GF(4); dimensions of free Lie algebras.

Terms

    a(0) =1a(1) =4a(2) =6a(3) =20a(4) =60a(5) =204a(6) =670a(7) =2340a(8) =8160a(9) =29120a(10) =104754a(11) =381300a(12) =1397740a(13) =5162220a(14) =19172790a(15) =71582716a(16) =268431360a(17) =1010580540a(18) =3817733920a(19) =14467258260a(20) =54975528948a(21) =209430785460a(22) =799644629550

External references