A011289 Decimal expansion of 20th root of 10.

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

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Comments

In many engineering branches, ratio of two "field" amplitudes corresponding to 1 dB power ratio. For a more detailed description, see A011279. - Stanislav Sykora, Apr 02 2012

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A011279.

Programs

Mathematica

RealDigits[N[10^(1/20),200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jan 25 2012 *)
RealDigits[Surd[10,20],10,120][[1]] (* Harvey P. Dale, Jul 30 2023 *)

PARI

sqrtn(10,20) \\ Charles R Greathouse IV, Apr 14 2014