Трибоначчи

public class Tribonacci {

    public static void main(String[] args) {

        int n = 3;
        int fn=0;
        int fnMinus1 = 0;
        int fnMinus2 = 0;
        int fnMinus3 = 1;
        int nMax = 15;

        while (n < nMax){
            fn = fnMinus1+fnMinus2+fnMinus3;
            System.out.print(fn + " ");
            fnMinus1= fnMinus2;
            fnMinus2 = fnMinus3;
            fnMinus3 = fn;
            n++;

        }
    }
}