A306966 - OEIS

A306966

Decimal expansion of t+t^2, where t is the tribonacci constant, the real root of x^3 - x^2 - x - 1.

5, 2, 2, 2, 2, 6, 2, 5, 2, 3, 1, 2, 0, 3, 9, 8, 6, 2, 6, 6, 7, 4, 5, 6, 1, 1, 0, 1, 1, 0, 8, 3, 2, 1, 1, 8, 7, 3, 7, 3, 5, 6, 0, 7, 8, 9, 8, 4, 6, 1, 6, 8, 4, 2, 8, 7, 9, 8, 3, 2, 1, 3, 1, 6, 6, 3, 9, 5, 7, 5, 1, 1, 8, 0, 9, 1, 9, 0, 6, 7, 1, 7, 9, 6, 2

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

By definition, this is also t^3-1 (cf. A276801).

LINKS

Table of n, a(n) for n=1..85.

EXAMPLE

5.222262523120398626674561101108321187373560789846...

MATHEMATICA

RealDigits[Root[x^3-x^2-x-1, 1]^3-1, 10, 100][[1]] (* Amiram Eldar, Mar 23 2019 *)

PROG