i                              A_i
  0                                1
 10                             1722
 12                            10619
 14                            49815
 16                           157563
 18                           341530
 20                           487326
 22                           487326
 24                           341530
 26                           157563
 28                            49815
 30                            10619
 32                             1722
 42                                1