#include <stdio.h>
//課題4
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;
    printf("a_n が n で割り切れる n の値:\n");
    for(int i = 1; i <= n; i++){
        int value = rec(i);
        if(value % i == 0){  
            printf("%d ", i);
        }
    }
    printf("\n");
	return 0;
}
 
 

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