A086326 Markoff numbers (A002559) multiplied by 3.

3, 6, 15, 39, 87, 102, 267, 507, 582, 699, 1299, 1830, 2955, 3975, 4791, 8691, 12543, 17223, 19398, 22683, 27231, 32838, 44103, 85971, 100383, 112998, 129783, 154923, 186630, 225075, 289671, 405411, 585075, 589254, 884055, 1279167, 1498179, 1542687, 1938054, 2777295, 3410067, 3836454

Offset: 1

Author

Antoine Verroken (antoine.verroken(AT)pandora.be), Aug 27 2003

Keywords

• nonn

Comments

Numbers n such that the Diophantine equation x^2+y^2+z^2 = x*y*z = n can be solved.

A list of x's in nondecreasing order over all solutions of x^2+y^2+z^2 = x*y*z, with x >= y >= z.

x,y,z is a solution of x^2+y^2+z^2 = 3x*y*z if and only if 3x,3y,3z is a solution of x^2+y^2+z^2 = x*y*z.

Examples

			a(1)=1, a(2)=6, a(3)=15, for (3,3,3), (6,3,3) and (15,6,3) are solutions of x^2+y^2+z^2 = x*y*z.