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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A088367 Decimal expansion of Grothendieck's constant Pi/(2*log(1+sqrt(2))). 3
1, 7, 8, 2, 2, 1, 3, 9, 7, 8, 1, 9, 1, 3, 6, 9, 1, 1, 1, 7, 7, 4, 4, 1, 3, 4, 5, 2, 9, 7, 2, 5, 4, 9, 3, 4, 0, 7, 9, 1, 7, 3, 1, 9, 0, 9, 7, 7, 3, 2, 3, 9, 3, 8, 1, 0, 2, 4, 9, 5, 9, 9, 5, 6, 8, 8, 5, 1, 5, 4, 1, 2, 8, 7, 6, 3, 7, 8, 4, 0, 8, 0, 2, 4, 3, 1, 6, 7, 6, 6, 3, 5, 7, 8, 2, 5, 5, 3, 0, 8, 9, 3 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

N. Alon et al., Quadratic forms on graphs, Inventiones Math., 163 (2006), 499-522.

LINKS

Table of n, a(n) for n=1..102.

Simon Plouffe, Grothendieck's majorant

Eric Weisstein's World of Mathematics, Grothendieck's Constant

EXAMPLE

1.7822139781913691117744134529725493407917319097732...

MATHEMATICA

RealDigits[Pi/(2*Log[1 + Sqrt[2]]), 10, 111][[1]] (from Robert G. Wilson v May 19 2004)

CROSSREFS

Sequence in context: A154169 A245260 A128755 * A196610 A198938 A244067

Adjacent sequences:  A088364 A088365 A088366 * A088368 A088369 A088370

KEYWORD

nonn,cons

AUTHOR

Eric W. Weisstein, Sep 27, 2003

EXTENSIONS

Edited by N. J. A. Sloane, Oct 01 2006

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified October 24 17:35 EDT 2014. Contains 248516 sequences.