【Java練習3】POJ 1405

import java.io.*;import java.math.*;import java.util.*;public class Main{public static void main(String[] args){Scanner cin = new Scanner(new BufferedInputStream(System.in));int n;while(cin.hasNext()){n = cin.nextInt();BigInteger a[] = new BigInteger [20];BigInteger two = new BigInteger("2");a[1] = two;int i;System.out.println(2);BigInteger tmp = new BigInteger("1");BigInteger one = new BigInteger("1");for(i=2;i<=n;i++){tmp = tmp.multiply(a[i-1]);a[i] = tmp.add(one);System.out.println(a[i]);}}}}