A010770 Decimal expansion of 8th root of 2.

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

Offset

1,3

Links

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

Formula

Equals Product_{k>=0} (1 + (-1)^k/(8*k + 7)). - Amiram Eldar, Jul 29 2020

Mathematica

RealDigits[N[2^(1/8), 100]][[1]] (* Vincenzo Librandi, Apr 02 2013 *)

Prog

(PARI) sqrtn(2, 8) \\ Charles R Greathouse IV, Apr 15 2014

Crossrefs

Sequence in context: A301865 A370705 A309605 * A021921 A374751 A247718

Adjacent sequences: A010767 A010768 A010769 * A010771 A010772 A010773

Keyword

nonn,cons

Author

N. J. A. Sloane.

Status

approved