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  1. #include <stdio.h>
  2.  
  3. int bn(int n) {
  4.     if (n == 1) return 5;
  5.     return bn(n - 1) + 6;
  6. }
  7.  
  8. int an(int n) {
  9.     if (n == 1) return 2;
  10.     return an(n - 1) + bn(n - 1);
  11. }
  12.  
  13. int main(void) {
  14.     int n;
  15.     scanf("%d", &n);
  16.  
  17.     printf("a%d = %d\n", n, an(n));
  18.     return 0;
  19. }
  20.  
Success #stdin #stdout 0.01s 5312KB
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stdin
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3
stdout
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a3 = 18
https://ideone.com/6LBzKn
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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