a(0) = 1, a(1) = 3; for n >= 2 a(n) is the number of degree-n monic reducible polynomials over GF(3), i.e., a(n) = 3^n - A027376(n).

A058818

a(0) = 1, a(1) = 3; for n >= 2 a(n) is the number of degree-n monic reducible polynomials over GF(3), i.e., a(n) = 3^n - A027376(n).

Terms

    a(0) =1a(1) =3a(2) =6a(3) =19a(4) =63a(5) =195a(6) =613a(7) =1875a(8) =5751a(9) =17499a(10) =53169a(11) =161043a(12) =487221a(13) =1471683a(14) =4441485a(15) =13392331a(16) =40356711a(17) =121543683a(18) =365898261a(19) =1101089811a(20) =3312448137a(21) =9962241251a(22) =29954655861a(23) =90049997139a(24) =270661661541a(25) =813397065075

External references