Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A145434
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A145434 Decimal expansion of sum_{n=1..inf} (-1)^(n-1)*n^2/binomial(2n,n). +0
2
1, 2, 5, 5, 6, 7, 2, 8, 4, 7, 2, 2, 8, 7, 9, 6, 7, 6, 8, 8, 8, 8, 4, 5, 3, 4, 1, 3, 6, 3, 9, 5, 1, 5, 6, 5, 9, 6, 6, 0, 3, 4, 3, 4, 5, 3, 9, 6, 7, 7, 6, 8, 2, 7, 6, 1, 9, 4, 3, 9, 5, 1, 1, 6, 8, 0, 5, 9, 5, 1, 0, 2, 7, 6, 3, 1, 0, 9, 4, 4, 3, 0, 9, 1, 0, 8, 0, 7, 7, 8, 8, 2, 4 (list; cons; graph; listen)
OFFSET

0,2

COMMENT

The numerator in the Apelblat table lacks the square (typo).

REFERENCES

Alexander Apelblat, Tables of Integrals and Series, Harri Deutsch, (1996), 4.1.40.

FORMULA

4*(5-A002164*A002390)/125 .

EXAMPLE

0.125567284722879676...

MAPLE

4/25-4/125*5^(1/2)*ln(1/2+1/2*5^(1/2)) ;

CROSSREFS

Sequence in context: A130851 A130856 A004095 this_sequence A117899 A120839 A129228

Adjacent sequences: A145431 A145432 A145433 this_sequence A145435 A145436 A145437

KEYWORD

cons,easy,nonn

AUTHOR

R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 08 2009

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


AT&T Labs Research