0,6
One arcsecond is a popular astronomic angular unit, 1/3600th of a degree.
Table of n, a(n) for n=0..104.
A019685/3600.
Equals 4.8481368110953599358..*10^(-6).
evalf(Pi/180/3600);
Join[{0, 0, 0, 0, 0}, RealDigits[Pi/648000, 10, 120][[1]]] (* Harvey P. Dale, Apr 04 2015 *)
(PARI) Pi/648000 \\ Charles R Greathouse IV, Sep 08 2011
Cf. A217572 (inverse). - Stanislav Sykora, Feb 04 2014
Sequence in context: A195289 A247318 A019838 * A010713 A105398 A005883
Adjacent sequences: A155967 A155968 A155969 * A155971 A155972 A155973
cons,easy,nonn
R. J. Mathar, Jan 31 2009
approved