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

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

(PARI) solve(x=0, 10, x^3 - x^2 - x - 1)^3 - 1 \\ Michel Marcus, Mar 23 2019

Crossrefs

Cf. A058265, A276801.

Sequence in context: A325499 A081119 A303579 * A286016 A119320 A363252

Adjacent sequences: A306963 A306964 A306965 * A306967 A306968 A306969

Keyword

nonn,cons

Author

N. J. A. Sloane, Mar 23 2019

Status

approved