1 | initial version |

```
var("s t")
def f(t,n):
return integral(sqrt(s/n)*1/sqrt(2*pi)*exp(-s*t^2/(2*n))*exp(-s/2)*s^(n/2-1)/(gamma(n/2)*2^(n/2)),s,0,infinity)
print [f(t,k) for k in range(1,10)]
```

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