A010772 Decimal expansion of 10th root of 2.

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

Offset

1,3

Comments

From its description in the Pickworth reference, this value determined the lower limit of the "log.-log. scales for numbers greater than unity" on the Davis Log.-Log. Rule calculating device. - Peter Munn, Aug 15 2020

References

C. N. Pickworth, The Slide Rule, 24th Ed., Pitman, London, 1945, pp. 85-88, Slide Rules with Log-log Scales.

Links

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

Formula

Equals Product_{k>=0} (1 + (-1)^k/(10*k + 9)). - Amiram Eldar, Jul 29 2020

Example

1.0717734625362931642130063250233420229063846...

Mathematica

RealDigits[N[2^(1/10), 100]][[1]] (* Vincenzo Librandi, Apr 02 2013 *)

Prog

(PARI) sqrtn(2, 10) \\ Charles R Greathouse IV, Apr 15 2014

Crossrefs

Sequence in context: A033953 A295872 A351835 * A199732 A293238 A210708

Adjacent sequences: A010769 A010770 A010771 * A010773 A010774 A010775

Keyword

nonn,cons

Author

N. J. A. Sloane.

Status

approved