#include <stdio.h>
#include <stdlib.h>

int main()
{
    #define MAXSIZE 30 //size of the list
    int num[MAXSIZE];   // array where to put list values
    //initialize num array elements to 0
    for (int i = 0; i < MAXSIZE; i++)
        num[i] = 0;
    //initialize first three elements of the list
    num[0] = num[1] = num[2] = 1;
    //create the list in num array elements
    for (int i = 3; i < MAXSIZE; i++)
    {
        num[i] = num[i - 1] + num[i - 3];
    }
    //print the list, that is the values that are in the num array
    printf("Serie is:\n");
    for (int i = 0; i < MAXSIZE; i++)
    {
        printf("%5d\n", num[i]);
    }
    // exit the program with return value 0 ==> program terminated with success
    exit(0);
}