A020817 Decimal expansion of 1/sqrt(60).

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

Offset

0,2

Comments

Equals 0.12909...= sqrt(5/3)/10 where sqrt(5/3) = sum_{n=0..infinity} binomial(2n,n)/10^n [Lehmer, Am. Math. Monthly 92 (1985) 449] - R. J. Mathar, Mar 04 2009

Links

Ivan Panchenko, Table of n, a(n) for n = 0..1000

Index entries for algebraic numbers, degree 2.

Mathematica

RealDigits[N[1/Sqrt[60], 200]] (* Vladimir Joseph Stephan Orlovsky, Jun 12 2011 *)

Prog

(PARI) 1/sqrt(60) \\ Charles R Greathouse IV, May 18 2026

Crossrefs

Sequence in context: A378806 A386522 A188619 * A245217 A133768 A085333

Adjacent sequences: A020814 A020815 A020816 * A020818 A020819 A020820

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved