A020772 Decimal expansion of 1/sqrt(15).

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

Offset

0,1

Links

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

Index entries for algebraic numbers, degree 2.

Formula

Equals 1/A010472 = A020760 * A020762. - R. J. Mathar, Nov 19 2024

Example

0.258198889747161125678617693318826640722194780352772721772504917740898872796....

Mathematica

RealDigits[N[1/Sqrt[15], 200]] (* Vladimir Joseph Stephan Orlovsky, May 30 2010 *)

Prog

(PARI) 1/sqrt(15) \\ Charles R Greathouse IV, May 18 2026

Crossrefs

Sequence in context: A366248 A362590 A248510 * A131598 A220337 A198545

Adjacent sequences: A020769 A020770 A020771 * A020773 A020774 A020775

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved