 
 
 
bernoulli takes as argument an integer n.
bernoulli returns the n-th Bernoulli number B(n).
The Bernoulli numbers are defined by :
| 
 | = | 
 | 
 | tn | 
Bernoulli polynomials Bk are defined by :
| B0=1, Bk′(x)=kBk−1(x), | ∫ | 
 | Bk(x)dx=0 | 
and the relation B(n)=Bn(0) holds.
Input :
Output :
 
 
