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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. int an(int n) {
  8.     if (n == 1) return 2;
  9.     return an(n - 1) + bn(n - 1);
  10. }
  11.  
  12. int main(void) {
  13.     int n;
  14.     scanf("%d", &n);
  15.     printf("anの第%d項は %d\n", n, an(n));
  16.     return 0;
  17. }
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin 
33
stdout 
anの第33項は 3138
https://ideone.com/eoIM2g
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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