#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;
}
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