login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188859 Decimal expansion of 2 - log(4). 5
6, 1, 3, 7, 0, 5, 6, 3, 8, 8, 8, 0, 1, 0, 9, 3, 8, 1, 1, 6, 5, 5, 3, 5, 7, 5, 7, 0, 8, 3, 6, 4, 6, 8, 6, 3, 8, 4, 8, 9, 9, 9, 7, 3, 1, 2, 7, 9, 4, 8, 9, 4, 9, 1, 7, 5, 8, 6, 3, 9, 9, 8, 1, 0, 1, 3, 2, 1, 2, 7, 5, 6, 0, 6, 0, 6, 1, 0, 5, 6, 8, 7, 8, 8, 2, 7, 3, 3, 4, 6, 0, 0, 7, 1, 6, 2, 6, 2, 4, 9, 1, 5, 9, 9, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
Limit as n increases without bound of the probability that n mod m is less than m/2, with m chosen uniformly at random from 1..n. (As usual, 0 <= n mod m < m.)
LINKS
Jean-Paul Allouche and Jeffrey Shallit, Sums of digits and the Hurwitz zeta function, in: K. Nagasaka and E. Fouvry (eds.), Analytic Number Theory, Lecture Notes in Mathematics, Vol. 1434, Springer, Berlin, Heidelberg, 1990, pp. 19-30.
FORMULA
From Amiram Eldar, Aug 15 2020: (Start)
Equals Sum_{k>=1} 1/(2*k^2 + k).
Equals -Integral_{x=0..1} log(1-x^2) dx. (End)
Equals Sum_{k>=1} A023416(k)/(k*(k+1)) (Allouche and Shallit, 1990). - Amiram Eldar, Jun 01 2021
Equals 1/(1 + 2/(3 + 1^2/(4 + 3^2/(5 + 2^2/(6 + 4^2/(7 + 3^2/(8 + 5^2/(9 + 4^2/(10 + 6^2/(11 + ... + (n-1)^2/((2*n) + (n+1)^2/((2*n+1) + ... )))))))))))). Cf. A016639. - Peter Bala, Mar 04 2024
EXAMPLE
0.61370563888010938116553575708364686384899973127949...
MATHEMATICA
RealDigits[2 - Log[4], 10, 120][[1]]
PROG
(PARI) vecextract(eval(Vec(Str(2-log(4)))), "3..")
CROSSREFS
Sequence in context: A296476 A296504 A360779 * A074584 A195478 A259731
KEYWORD
nonn,cons,easy
AUTHOR
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 06:57 EDT 2024. Contains 371265 sequences. (Running on oeis4.)