The tribonacci constant is ratio to which adjacent tribonacci numbers tend, and is given by
(1) | |||
(2) | |||
(3) |
(Sloane's A058265).
The tribonacci constant satisfies the identities
(4) | |||
(5) | |||
(6) | |||
(7) |
(P. Moses, pers. comm., Feb. 21, 2005).
The tribonacci constant is extremely prominent in the properties of the snub cube.
Sloane, N. J. A. Sequences A058265 in "The On-Line Encyclopedia of Integer Sequences." http://www.research.att.com/~njas/sequences/.