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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A175815 Numbers n such that the first n decimal digits of Euler's constant gamma contain equal numbers of even and odd decimal digits. 0
18, 52, 54, 58, 60, 62, 230, 234, 236, 242, 290, 292, 294, 298, 3668, 3670, 3674, 3676, 3680, 3682, 3714, 3716, 3760, 3762, 3774, 3776, 3796, 3798, 3816, 3818, 3826, 3828, 3832, 3838, 3840, 3866, 3868, 3872, 3874, 3876, 4148, 4186, 4190, 6018, 6024, 6036 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecturally infinite. - Charles R Greathouse IV, May 15 2013

LINKS

Table of n, a(n) for n=1..46.

EXAMPLE

18 is in the sequence because, the first 18 digits of gamma = .577215664901532860 have 9 even and 9 odd digits.

MATHEMATICA

L= Rest@FoldList[ Plus, 0, (-1)^First@ RealDigits[EulerGamma, 10, 7000]] ; Do[If [L[[n]]==0, Print[n]], {n, 7000}]

CROSSREFS

Cf. A175794

Sequence in context: A093520 A051870 A262454 * A069130 A124711 A126372

Adjacent sequences:  A175812 A175813 A175814 * A175816 A175817 A175818

KEYWORD

nonn,base

AUTHOR

Michel Lagneau, Sep 09 2010

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 7 21:06 EST 2016. Contains 278895 sequences.