String str = "1 1 2 3 5 8 13 21";
BigDecimal a = BigDecimal.ONE;
BigDecimal b = BigDecimal.ONE;
for (int i =0;i<100;i++ ){
System.out.println(a+" ");
System.out.println(b+" ");
a = a.add(b);
b= b.add(a);
}