A021687 Decimal expansion of 1/683.

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

Offset

0,4

Comments

Radiant intensity in any given direction, expressed in W/sr (Watts per steradian), of a luminous source with the frequency 540*10^12 Hz, corresponding to 1 cd (candela). Defined and fixed in 1979 by the 16th CPGM. - Stanislav Sykora, Mar 30 2015

Links

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

Bureau International des Poids et Mesures, General Conference on Weights and Measures

Wikipedia, Candela

Wikipedia, Radiant intensity

Example

0.0014641288433382137628111273792...

Mathematica

d = RealDigits@ N[1/683, 120]; PadLeft[First@ d, Length@ First@ d + Abs@ Last@ d] (* Michael De Vlieger, Mar 30 2015 *)
realDigitsRecip[683] (* The realDigitsRecip program is at A021200 *) (* Harvey P. Dale, Nov 01 2024 *)

Prog

(PARI) 1/683.0 \\ Michel Marcus, Mar 31 2015

Crossrefs

Sequence in context: A217285 A212635 A087108 * A063422 A261638 A010670

Adjacent sequences: A021684 A021685 A021686 * A021688 A021689 A021690

Keyword

nonn,cons

Author

N. J. A. Sloane

Status

approved