#include <stdio.h>
//課題3
int rec(int n){
if(n == 0) return 3;
else    if(n == 1) return 0;
else  if(n == 2) return 2;

 else    return rec(n-2) + rec(n-3);
 
}

int main(void) {
    int n = 50; 
    for(int i = 0; i <= n; i++){
        printf("%d, ", rec(i));
    }
    
	return 0;
}