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A010781
Decimal expansion of 19th root of 2.
1
1, 0, 3, 7, 1, 5, 5, 0, 4, 4, 4, 4, 6, 1, 9, 1, 9, 8, 6, 1, 3, 8, 7, 2, 5, 0, 2, 5, 5, 5, 6, 3, 8, 7, 2, 8, 0, 9, 9, 0, 1, 2, 4, 0, 1, 7, 9, 7, 6, 5, 1, 2, 3, 5, 7, 9, 9, 5, 2, 8, 7, 3, 9, 8, 0, 0, 7, 6, 8, 7, 3, 5, 3, 8, 1, 5, 1, 8, 7, 4, 2, 0, 0, 9, 3, 6, 0, 0, 6, 0, 1, 3, 8, 8, 6, 2, 0, 2, 0
OFFSET
1,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..5000 (a(5000) corrected by Sean A. Irvine)
FORMULA
Equals Product_{k>=0} (1 + (-1)^k/(19*k + 18)). - Amiram Eldar, Aug 01 2020
MATHEMATICA
RealDigits[N[2^(1/19), 100]][[1]] (* Vincenzo Librandi, Apr 03 2013 *)
PROG
(PARI) sqrtn(2, 19) \\ Charles R Greathouse IV, Apr 15 2014
CROSSREFS
Sequence in context: A016664 A197758 A071792 * A019806 A199589 A354977
KEYWORD
nonn,cons
AUTHOR
STATUS
approved