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 A210583 Decimal expansion of (9/2)*Pi. 0
 1, 4, 1, 3, 7, 1, 6, 6, 9, 4, 1, 1, 5, 4, 0, 6, 9, 5, 7, 3, 0, 8, 1, 8, 9, 5, 2, 2, 4, 7, 5, 7, 7, 6, 2, 9, 7, 8, 8, 8, 7, 2, 6, 2, 2, 9, 7, 1, 8, 7, 9, 7, 6, 1, 9, 4, 3, 8, 7, 2, 5, 0, 6, 6, 5, 3, 8, 5, 1, 7, 3, 8, 2, 8, 2, 8, 7, 9, 4, 0, 4, 9, 3, 8, 2, 6, 1, 5, 6, 7 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 2,2 LINKS Table of n, a(n) for n=2..91. Index entries for transcendental numbers FORMULA Equals (9/2)*A000796. Equals the Bessel moment Integral_{0..inf} x^4 K_0(x) dx, where K_0 is the modified Bessel function of the second kind. - Jean-François Alcover, May 31 2016 Equals 10 * Sum_{k>=1} sin(k*Pi/10)/k. - Amiram Eldar, May 30 2021 EXAMPLE 14.137166941154069573... MAPLE evalf(9*Pi/2) ; MATHEMATICA RealDigits[N[(9/2)*Pi, 90]][[1]] PROG (PARI) 9/2*Pi \\ Charles R Greathouse IV, Oct 01 2022 CROSSREFS Cf. A000796. Sequence in context: A190479 A074813 A151861 * A200171 A109531 A200132 Adjacent sequences: A210580 A210581 A210582 * A210584 A210585 A210586 KEYWORD nonn,cons AUTHOR Mats Granvik, Mar 23 2012 STATUS approved

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Last modified April 18 10:44 EDT 2024. Contains 371779 sequences. (Running on oeis4.)