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  1. #include <stdio.h>
  2.  
  3. int main() {
  4. 	int a[31];
  5.  
  6.  
  7.  
  8.     a[0] = 2;
  9. 	a[1] = -1;
  10.  
  11.  
  12.     for(int n = 0; n <= 28; n++){
  13.        a[n+2] = -a[n+1] + a[n] + 2;
  14.     }
  15.  
  16.  
  17.     printf("a[30] = %d\n", a[30]);
  18.  
  19.     return 0;
  20. }
Success #stdin #stdout 0s 5324KB
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stdin
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Standard input is empty
stdout
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a[30] = 2496122
https://ideone.com/qq3kWQ
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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