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 A249521 Decimal expansion of 4/sqrt(Pi), the average distance between two random Gaussian points in three dimensions. 3
 2, 2, 5, 6, 7, 5, 8, 3, 3, 4, 1, 9, 1, 0, 2, 5, 1, 4, 7, 7, 9, 2, 3, 1, 7, 8, 0, 6, 2, 4, 3, 0, 9, 0, 3, 4, 3, 3, 7, 6, 2, 0, 2, 5, 1, 7, 3, 1, 5, 9, 9, 5, 4, 2, 7, 3, 7, 6, 3, 4, 2, 8, 8, 6, 8, 4, 2, 5, 6, 9, 8, 7, 3, 7, 6, 5, 9, 7, 3, 6, 5, 7, 9, 4, 6, 9, 7, 4, 6, 4, 0, 8, 0, 8, 4, 2, 9, 4, 5, 3, 7, 7, 2 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Coordinates are independent normally distributed random variables with mean 0 and variance 1. LINKS G. C. Greubel, Table of n, a(n) for n = 1..5000 Steven R. Finch, Random Triangles, January 21, 2010. [Cached copy, with permission of the author] EXAMPLE 2.25675833419102514779231780624309034337620251731... MATHEMATICA RealDigits[4/Sqrt[Pi], 10, 103] // First PROG (PARI) 4/sqrt(Pi) \\ G. C. Greubel, Jan 09 2017 CROSSREFS Cf. A002161 (the analog constant in two dimensions), A087197, A190732 (the analog constant in one dimension). Sequence in context: A209527 A054255 A063177 * A034803 A205885 A239262 Adjacent sequences:  A249518 A249519 A249520 * A249522 A249523 A249524 KEYWORD nonn,cons,easy AUTHOR Jean-François Alcover, Oct 31 2014 STATUS approved

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Last modified December 7 19:47 EST 2021. Contains 349585 sequences. (Running on oeis4.)