A010581 Decimal expansion of cube root of 9.

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

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Examples

			2.08008382305190411453005682435788538633780534037326210...
		

References

• Horace S. Uhler, Many-figure approximations for cubic root of 2, cubic root of 3, cubic root of 4 and cubic root of 9 with chi 2 data, Scripta Math. 18, (1952). 173-176.

Links

• Harry J. Smith, Table of n, a(n) for n = 1..20000
• H. S. Uhler, Many-figure approximations for cubed root of 2, cubed root of 3, cubed root of 4, and cubed root of 9 with chi2 data, Scripta Math. 18, (1952). 173-176. [Annotated scanned copies of pages 175 and 176 only]

Crossrefs

Cf. A010239 = Continued fraction. - Harry J. Smith, May 07 2009

Programs

Mathematica

RealDigits[N[9^(1/3), 200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jan 24 2012 *)

PARI

{ default(realprecision, 20080); x=9^(1/3); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010581.txt", n, " ", d)); } \\ Harry J. Smith, May 07 2009, corrected May 19 2009

Extensions

Revised by N. J. A. Sloane, Apr 23 2006