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A248645
Number of light-years in a parsec, prior to its redefinition in August 2015.
4
3, 2, 6, 1, 5, 6, 3, 7, 7, 7, 1, 4, 1, 8, 7, 9, 8, 2, 9, 0, 5, 5, 5, 0, 9, 7, 7, 2, 9, 9, 6, 7, 5, 1, 7, 9, 2, 3, 2, 7, 8, 2, 8, 7, 2, 3, 6, 0, 8, 2, 3, 8, 2, 8, 2, 5, 3, 2, 5, 2, 9, 2, 6, 4, 1, 3, 4, 4, 2, 5, 7, 7, 3, 6, 6, 8, 7, 3, 1, 0, 8, 5, 4, 2, 3, 7, 6, 0, 0, 0, 7, 5, 1, 1, 5, 3, 1, 4, 5
OFFSET
1,1
COMMENTS
Light takes approximately 3.26 years to cross a parsec.
Like A248424, this is an algebraic integer of degree 86400. - M. F. Hasler, Oct 31 2014
Although the definition has changed, this sequence is preserved in the OEIS for historical reasons. - N. J. A. Sloane, Oct 14 2017
FORMULA
Equals A248424 / A213614.
EXAMPLE
3.261563777... light-years.
PROG
(PARI) A248645=(A248424=149597870700/tan(Pi/180/3600))/A213614=9460730472580800 \\ Then use eval(select(x->x>".", Vec(Str(%)))) to get the sequence of digits. First, use \pX to get X digits. M. F. Hasler, Oct 31 2014
CROSSREFS
KEYWORD
nonn,cons,easy
AUTHOR
EXTENSIONS
Edited and more terms added by M. F. Hasler, Oct 31 2014
Name edited by Arkadiusz Wesolowski, Oct 14 2017
STATUS
approved