|
| |
|
|
A086201
|
|
Decimal expansion of 1/(2pi).
|
|
25
| |
|
|
1, 5, 9, 1, 5, 4, 9, 4, 3, 0, 9, 1, 8, 9, 5, 3, 3, 5, 7, 6, 8, 8, 8, 3, 7, 6, 3, 3, 7, 2, 5, 1, 4, 3, 6, 2, 0, 3, 4, 4, 5, 9, 6, 4, 5, 7, 4, 0, 4, 5, 6, 4, 4, 8, 7, 4, 7, 6, 6, 7, 3, 4, 4, 0, 5, 8, 8, 9, 6, 7, 9, 7, 6, 3, 4, 2, 2, 6, 5, 3, 5, 0, 9, 0, 1, 1, 3, 8, 0, 2, 7, 6, 6, 2, 5, 3, 0, 8, 5, 9, 5, 6
(list; constant; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
COMMENTS
| Contribution from Eric Desbiaux (moongerms(AT)wanadoo.fr), Dec 21 2008: (Start)
If a single hump of cycloid, arc length equal 8*radius (generating circle),
is inside a rectangle, width=2*radius and length=2*Pi*radius,
also the radius must be 1/(2*Pi),A086201,
to have (2/Pi), A060294, as semi arc of cycloid (arc=4/Pi=A088538)
and the rectangle... length=1, width=1/Pi.
I suppose that in 3D geometry, gliding along a cycloid, in all directions around, from a point A at the height of 1/Pi, give Pi*point B
(End)
|
|
|
LINKS
| Eric Weisstein's World of Mathematics, Plouffe's Constant
Eric Weisstein's World of Mathematics, Pythagorean Triple
|
|
|
EXAMPLE
| 0.15915...
|
|
|
MATHEMATICA
| RealDigits[N[1/(2*Pi), 6! ]][[1]] [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 18 2009]
|
|
|
CROSSREFS
| Sequence in context: A188616 A127414 A186192 * A010490 A021173 A063921
Adjacent sequences: A086198 A086199 A086200 * A086202 A086203 A086204
|
|
|
KEYWORD
| nonn,cons
|
|
|
AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Jul 12, 2003
|
| |
|
|
