#include <stdio.h>
//練習問題F
 
int func(int n){
    int a=-1;
    int i;
    for(i=0; i<n; i++){
    	a = 3*a+5;
    }
return a;
 
}
int main(void) {
	int n = 4;
	for(int i=0; i<=n; i++){
    printf("数列anについて, n=%dのときの値は%d\n", i
, func
(i
)); 	}
	return 0;
}
 
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