a(1) = 1, a(2) = -1; for n > 2, a(n) is smallest magnitude nonzero integer which has not appeared such that the quadratic equation a(n-2)*x^2 + a(n-1)*x + a(n) = 0 has at least one integer root.

A358462

a(1) = 1, a(2) = -1; for n > 2, a(n) is smallest magnitude nonzero integer which has not appeared such that the quadratic equation a(n-2)*x^2 + a(n-1)*x + a(n) = 0 has at least one integer root.

Terms

    a(0) =1a(1) =-1a(2) =-2a(3) =3a(4) =2a(5) =-5a(6) =-3a(7) =8a(8) =-4a(9) =-12a(10) =-8a(11) =4a(12) =12a(13) =-16a(14) =-28a(15) =44a(16) =24a(17) =-20a(18) =-44a(19) =-24a(20) =20a(21) =56a(22) =32a(23) =-88a(24) =48a(25) =40a(26) =-112a(27) =64a(28) =176a(29) =-48

External references