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  1. #include <stdio.h>
  2.  
  3. int seq() {
  4. int static fn = 1;
  5. fn = 3 * fn + 1;
  6.  
  7. return fn;
  8. }
  9.  
  10. int main(void) {
  11. int i;
  12. for(i = 2; i <= 10; i++) {
  13. int answer = seq();
  14. printf("f%d = %d\n",i,answer);
  15. }
  16. return 0;
  17. }
  18.  
Success #stdin #stdout 0s 5316KB
stdin
Standard input is empty
stdout
f2 = 4
f3 = 13
f4 = 40
f5 = 121
f6 = 364
f7 = 1093
f8 = 3280
f9 = 9841
f10 = 29524