A010590 Decimal expansion of cube root of 18.

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

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..5000

Formula

Equals sqrt(3*sqrt(2*sqrt(3*sqrt(2*sqrt(3*sqrt(2)...))))). - Zak Seidov, Dec 19 2009

Example

2.62074139420889660714166128044199627023942764572363172510277380572869981...

Maple

evalf[100](root(18, 3)); # Muniru A Asiru, Feb 10 2019

Mathematica

RealDigits[N[18^(1/3), 200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Feb 06 2012 *)

Prog

(PARI) sqrtn(18, 3) \\ Charles R Greathouse IV, Apr 14 2014

Crossrefs

Cf. A010248 (continued fraction).

Sequence in context: A168294 A363737 A004544 * A049061 A342670 A298782

Adjacent sequences: A010587 A010588 A010589 * A010591 A010592 A010593

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved