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

1,1

Links

Table of n, a(n) for n=1..32.

Tom Ace, Markoff numbers.

Simone Severini, Homepage.

Crossrefs

Cf. A002559.

Sequence in context: A249002 A249467 A309924 * A319334 A064247 A125340

Adjacent sequences: A120336 A120337 A120338 * A120340 A120341 A120342

Keyword

nonn

Author

Simone Severini, Jun 22 2006

Extensions

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

Status

approved