View Compilation Error

0_0_28717762_28942.cpp: In function 'int main()':
0_0_28717762_28942.cpp:12:18: error: expected ']' before ')' token
 a[i]=(i-1)*(a[i-1)+a[i-2])
                  ^
0_0_28717762_28942.cpp:12:26: error: expected ';' before ')' token
 a[i]=(i-1)*(a[i-1)+a[i-2])
                          ^