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  1. #include <stdio.h>
  2.  
  3. int take(int n){
  4. 	if(n==2){
  5. 		return 2;
  6. 	}
  7. 	else if(n==1){
  8. 		return 1;
  9. 	}
  10. 	else {return -6*take(n-1)-9*take(n-2);}
  11.  
  12. }
  13.  
  14.  
  15. int main(void) {
  16. int	n=10;
  17.    for(int i=3;i<=n;i++){
  18. 	printf("%dのとき%d\n",i,take(i));}
  19. 	return 0;
  20. }
  21.  
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
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Standard input is empty
stdout
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3のとき-21
4のとき108
5のとき-459
6のとき1782
7のとき-6561
8のとき23328
9のとき-80919
10のとき275562
https://ideone.com/HkzQjf
language:
C (gcc 8.3)
created:
72 days ago
visibility:
public

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