sum n!/n^n, n=1 to infinity

T2.java

public class T2 {
	public static void main(String arg[]){
		double acum = 0;
		for (int n = 1;n<=10;n++){
			acum+=factorial(n)/nALaN(n,n);
		}
		System.out.print(acum);
	}
	public static Long factorial(int i){
		if (i==1){
			return new Long(1);
		}else{
			return i*factorial(i-1);
		}
	}
	public static double nALaN(int i, int n){
		if (i==1){
			return n;
		}else{
			return n*nALaN(i-1,n);
		}
	}
}