login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A119926 Continued fraction expansion of the value of Minkowski's question mark function at 1/Pi. 1
0, 4, 31, 1, 3, 127, 1, 2, 1, 31, 4, 369609730464587576881796108788303489874280580713009640661874741394877821854816844, 1, 1, 2, 2, 61, 4, 8, 1, 1, 1, 1, 4, 3, 1, 2, 1, 9, 2, 5, 1, 3, 3, 10, 2, 1, 1, 1, 1, 1, 8, 5, 1, 12, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Due to the unusually large early term, this value is very nearly (127*2^16 + 1)/2^25 = 8323073/33554432. Decimal expansion given by A119927.

LINKS

Table of n, a(n) for n=0..45.

Index entries for Minkowski's question mark function

Index entries for sequences related to Minkowski's question mark function

MATHEMATICA

ContinuedFraction[(cf = ContinuedFraction[1/Pi, 80(*arbitrary precision*)]; IntegerPart[1/Pi] + Sum[(-1)^(k)/2^(Sum[cf[[i]], {i, 2, k}] - 1), {k, 2, Length[cf]}])]

CROSSREFS

Cf. A119927.

Sequence in context: A201974 A221250 * A103307 A196248 A196246 A025416

Adjacent sequences:  A119923 A119924 A119925 * A119927 A119928 A119929

KEYWORD

cofr,nonn

AUTHOR

Joseph Biberstine (jrbibers(AT)indiana.edu), May 29 2006

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 November 15 11:18 EST 2019. Contains 329144 sequences. (Running on oeis4.)