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.

30, 195, 870, 1326, 9078, 29406, 37830, 62211, 188355, 426390, 998790, 1756950, 2922510, 8430270, 20031171, 33929310, 41996670, 57206526, 82401006, 137295678, 216148803, 941038566, 1152597606, 1418915886, 1879906755, 2668548675, 3870146310, 6449974275, 9365063430, 18263765550, 39154389150, 44208781350

Offset: 1

Author

Simone Severini, Jun 22 2006

Keywords

• nonn

Links

• Tom Ace, Markoff numbers.
• Simone Severini, Homepage.

Crossrefs

Cf. A002559.

Extensions

Corrected and extended by T. D. Noe, Jan 28 2011