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!)
A155680 Decimal expansion of log_13 (21). 22
1, 1, 8, 6, 9, 7, 1, 7, 5, 3, 9, 9, 0, 6, 9, 3, 6, 7, 5, 6, 6, 3, 1, 0, 5, 9, 5, 3, 7, 1, 0, 6, 6, 8, 8, 8, 4, 1, 1, 5, 2, 8, 2, 7, 0, 3, 4, 6, 8, 7, 6, 5, 9, 0, 7, 0, 0, 0, 8, 0, 8, 0, 2, 0, 9, 5, 4, 3, 3, 6, 8, 8, 2, 6, 5, 4, 8, 4, 7, 2, 7, 9, 8, 6, 2, 1, 2, 4 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

EXAMPLE

1.1869717539906936756631059537106688841152827034687659070008...

MATHEMATICA

RealDigits[Log[13, 21], 10, 100][[1]] (* Vincenzo Librandi, Sep 02 2013 *)

CROSSREFS

Cf. decimal expansion of log_13(m): A152779 (m=2), A153016 (m=3), A153106 (m=4), A153313 (m=5), A153603 (m=6), A153623 (m=7), A153855 (m=8), A154013 (m=9), A154163 (m=10), A154184 (m=11), A154205 (m=12), A154481 (m=14), A154583 (m=15), A154803 (m=16), A154885 (m=17), A154970 (m=18), A155065 (m=19), A155525 (m=20), this sequence, A155759 (m=22), A155837 (m=23), A155983 (m=24).

Sequence in context: A021119 A256686 A160056 * A249103 A116517 A081544

Adjacent sequences:  A155677 A155678 A155679 * A155681 A155682 A155683

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane, Oct 30 2009

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 15 11:43 EST 2019. Contains 329999 sequences. (Running on oeis4.)