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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 (list; constant; graph; refs; listen; history; text; internal format)
 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 LINKS Wikipedia, Parsec. Wikipedia, Light-year 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 Cf. A163103, A213614, A217572, A248424, A292525, A344323. Sequence in context: A244823 A286157 A016460 * A344323 A161826 A097887 Adjacent sequences:  A248642 A248643 A248644 * A248646 A248647 A248648 KEYWORD nonn,cons,easy AUTHOR Arkadiusz Wesolowski, Oct 10 2014 EXTENSIONS Edited and more terms added by M. F. Hasler, Oct 31 2014 Name edited by Arkadiusz Wesolowski, Oct 14 2017 STATUS approved

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Last modified September 24 19:27 EDT 2021. Contains 347651 sequences. (Running on oeis4.)