#include <stdio.h>

int seq() {
	int static fn = 1;
	fn = 3 * fn + 1;
	
	return fn;
}

int main(void) {
	int i;
	for(i = 2; i <= 10; i++) {
		int answer = seq();
		printf("f%d = %d\n",i,answer);
	}
	return 0;
}