a(n) = 3abc, where (a,b,c) is a Markoff triple. The first Markoff triple considered is (1,2,5) and the ordering is increasing.

A120339

a(n) = 3abc, where (a,b,c) is a Markoff triple. The first Markoff triple considered is (1,2,5) and the ordering is increasing.

Terms

    a(0) =30a(1) =195a(2) =870a(3) =1326a(4) =9078a(5) =29406a(6) =37830a(7) =62211a(8) =188355a(9) =426390a(10) =998790a(11) =1756950a(12) =2922510a(13) =8430270a(14) =20031171a(15) =33929310a(16) =41996670a(17) =57206526a(18) =82401006a(19) =137295678a(20) =216148803a(21) =941038566a(22) =1152597606a(23) =1418915886a(24) =1879906755a(25) =2668548675a(26) =3870146310a(27) =6449974275a(28) =9365063430a(29) =18263765550

External references