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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A289504 Decimal expansion of 2*(1+3^(3/2)/(2*Pi)). 1
3, 6, 5, 3, 9, 8, 6, 6, 8, 6, 2, 6, 5, 3, 7, 6, 1, 4, 8, 5, 3, 3, 9, 7, 9, 4, 9, 4, 9, 3, 8, 9, 0, 8, 3, 2, 4, 1, 9, 2, 1, 5, 9, 4, 4, 1, 0, 9, 9, 9, 2, 1, 9, 5, 8, 3, 9, 8, 0, 9, 8, 0, 6, 0, 8, 7, 3, 0, 9, 0, 9, 1, 0, 4, 0, 7, 8, 0, 9, 3, 8, 4, 5, 2, 1, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..86.

S. R. Finch, Mean width of a regular simplex, arxiv:1111.4976 [math.MG], (2016), nu_2.

FORMULA

Equals 2*(1+A086089).

EXAMPLE

3.6539866862653761485339794949389083241921...

MAPLE

2*(1+3*sqrt(3)/2/Pi); evalf(%) ;

MATHEMATICA

RealDigits[2(1+3^(3/2)/(2Pi)), 10, 120][[1]] (* Harvey P. Dale, Nov 05 2019 *)

PROG

(Python)

from mpmath import *

mp.dps=86

print map(int, list(str(2*(1 + 3*sqrt(3)/(2*pi))).replace('.', ''))) # Indranil Ghosh, Jul 08 2017

CROSSREFS

Sequence in context: A011223 A188670 A102621 * A159066 A159057 A159067

Adjacent sequences:  A289501 A289502 A289503 * A289505 A289506 A289507

KEYWORD

nonn,cons,easy

AUTHOR

R. J. Mathar, Jul 07 2017

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 7 04:20 EDT 2020. Contains 333292 sequences. (Running on oeis4.)