A352672 Decimal expansion of r = (3/2)*(1+sqrt(3)).

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

Offset

1,1

Links

Table of n, a(n) for n=1..86.

Index entries for algebraic numbers, degree 2.

Formula

Equals A104956 + 3/2. - Michel Marcus, Mar 28 2022

Equals (3/2) * A090388. - Bernard Schott, Mar 28 2022

Minimal polynomial: 2*x^2 - 6*x - 9. - Amiram Eldar, May 26 2026

Example

4.098076211353315940291169512258808550414...

Mathematica

r = N[(3/2) (1 + Sqrt[3]), 200]
RealDigits[r][[1]]
(* Alternative: *)
RealDigits[3 (1+Sqrt[3])/2, 10, 120][[1]] (* Harvey P. Dale, Oct 14 2025 *)

Prog

(PARI) 3*(sqrt(3)+1)/2 \\ Charles R Greathouse IV, May 18 2026

Crossrefs

Cf. A090388, A352673, A352674, A352676.

Apart from leading digits the same as A176325 and A104956.

Sequence in context: A176220 A197285 A357017 * A188147 A187286 A187189

Adjacent sequences: A352669 A352670 A352671 * A352673 A352674 A352675

Keyword

nonn,cons

Author

Clark Kimberling, Mar 26 2022

Status

approved