The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A222392 Decimal expansion of sum(1/Gamma(n/2), n>=1). 2
 5, 5, 7, 3, 1, 6, 9, 6, 6, 4, 3, 1, 0, 0, 3, 9, 7, 5, 3, 2, 5, 7, 9, 0, 4, 0, 4, 9, 7, 7, 5, 5, 8, 2, 4, 0, 0, 5, 3, 8, 3, 8, 5, 3, 1, 3, 5, 6, 4, 6, 6, 5, 3, 4, 3, 0, 3, 2, 4, 8, 1, 2, 0, 6, 4, 1, 8, 2, 9, 0, 3, 0, 7, 3, 2, 8, 3, 4, 5, 3, 5, 8, 4, 2, 2, 4, 5 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..5000 FORMULA Equals (1+erf(1))*e+1/sqrt(Pi), where erf is the error function (see A099286). EXAMPLE 5.57316966431003975325790404977558240053838531356466534303248120641829030... MATHEMATICA RealDigits[(1 + Erf[1]) E + 1/Sqrt[Pi], 10, 90][[1]] CROSSREFS Cf. A222391. Cf. A001113, sum(1/Gamma(n), n>=1). Sequence in context: A274030 A061382 A113272 * A049471 A049789 A234473 Adjacent sequences:  A222389 A222390 A222391 * A222393 A222394 A222395 KEYWORD nonn,cons AUTHOR Bruno Berselli, Mar 19 2013 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 16 10:48 EDT 2021. Contains 343941 sequences. (Running on oeis4.)