|
Search: id:A065444
|
|
|
| A065444 |
|
Decimal expansion of 9*Sum{k=1..inf} 1/(10^k-1). |
|
+0
5
|
|
| 1, 1, 0, 0, 9, 1, 8, 1, 9, 0, 8, 3, 6, 2, 0, 0, 7, 3, 6, 3, 7, 9, 8, 5, 5, 1, 0, 1, 6, 5, 4, 3, 8, 0, 0, 4, 3, 2, 0, 3, 4, 5, 4, 3, 9, 7, 8, 7, 3, 2, 8, 1, 6, 5, 6, 3, 5, 9, 8, 9, 0, 2, 2, 0, 7, 3, 4, 3, 8, 3, 4, 9, 0, 2, 1, 9, 8, 3, 4, 7, 4, 8, 8, 9, 2, 0, 0, 3, 4, 9, 2, 1, 8, 0, 0, 7, 0, 4, 0, 2, 3, 5
(list; cons; graph; listen)
|
|
|
OFFSET
|
1,5
|
|
|
REFERENCES
|
S. R. Finch, Mathematical Constants, Cambridge, 2003, pp. 354-361.
|
|
LINKS
|
Harry J. Smith, Table of n, a(n) for n=1,...,2000
S. R. Finch, Digital Search Tree Constants
|
|
EXAMPLE
|
1.10091819083620073637985510165438004320345439787328165635989...
|
|
MATHEMATICA
|
RealDigits[9*N[ Sum[1/(10^k - 1), {k, 1, Infinity}], 120]] [[1]]
|
|
PROGRAM
|
(PARI) { default(realprecision, 2080); x=9*suminf(k=1, 1/(10^k - 1)); for (n=1, 2000, d=floor(x); x=(x-d)*10; write("b065444.txt", n, " ", d)) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 19 2009]
|
|
CROSSREFS
|
Equals 9*A073668.
Sequence in context: A019948 A154207 A084002 this_sequence A010169 A113657 A098783
Adjacent sequences: A065441 A065442 A065443 this_sequence A065445 A065446 A065447
|
|
KEYWORD
|
nonn,cons
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com), Nov 18 2001
|
|
EXTENSIONS
|
More terms from John W. Layman (layman(AT)math.vt.edu), Nov 19 2001
...733 (50th digit) expanded to ...7328165 etc. by (frank.ellermann(AT)t-online.de), Feb 23 2002
|
|
|
Search completed in 0.002 seconds
|
