A021020 Decimal expansion of 1/16.

0, 6, 2, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset

0,2

Links

Table of n, a(n) for n=0..98.

Srinivasa Ramanujan, Question 463, Journal of the Indian Mathematical Society, Vol. 5 (1913), p. 120.

Index entries for linear recurrences with constant coefficients, signature (1).

Formula

Equals Integral_{x>=0} (x/sinh(2*Pi*x) dx. - Jean-François Alcover, Mar 20 2013

Equals Integral_{x>=0} cos(2*Pi*x)/(exp(2*Pi*sqrt(x))-1) dx (Ramanujan, 1913). - Amiram Eldar, Jan 01 2025

Example

0.0625

Mathematica

RealDigits[1/16, 10, 100, -1][[1]] (* Amiram Eldar, Jan 01 2025 *)

Crossrefs

Sequence in context: A248272 A058160 A033939 * A215578 A007320 A199734

Adjacent sequences: A021017 A021018 A021019 * A021021 A021022 A021023

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved