|
Search: id:A040174
|
|
|
| A040174 |
|
Denominator of probability that 2 elements of S_n chosen at random (with replacement) generate S_n. |
|
+0
3
|
| |
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
|
|
EXAMPLE
|
Values for n=1,2,3,... are 1, 3/4, 1/2, 3/8, 19/40, ...
|
|
CROSSREFS
|
Probability is A040173/A040174 = A040175/n!.
Sequence in context: A002291 A110622 A130078 this_sequence A084477 A046589 A072562
Adjacent sequences: A040171 A040172 A040173 this_sequence A040175 A040176 A040177
|
|
KEYWORD
|
nonn,frac,nice
|
|
AUTHOR
|
Dan Hoey (Hoey(AT)aic.nrl.navy.mil)
|
|
|
Search completed in 0.002 seconds
|
