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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A119927 Decimal expansion of the value of Minkowski's question mark function at 1/Pi. 1
2, 4, 8, 0, 4, 6, 9, 0, 4, 8, 0, 2, 3, 2, 2, 3, 8, 7, 6, 9, 5, 3, 1, 2, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 0, 3, 0, 1, 6, 8, 7, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

This value is very nearly (127*2^16 + 1)/2^25 = 8323073/33554432. Continued fraction expansion given by A119926.

LINKS

Table of n, a(n) for n=0..104.

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

EXAMPLE

0.248046904802322387695312500000000000000000000000000000000000000000000000000000000000000000000002403...

MATHEMATICA

RealDigits[(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]}]), 10]

CROSSREFS

Cf. A119926.

Sequence in context: A063864 A186036 A186040 * A212003 A096255 A291355

Adjacent sequences:  A119924 A119925 A119926 * A119928 A119929 A119930

KEYWORD

cons,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 December 14 14:50 EST 2019. Contains 329979 sequences. (Running on oeis4.)