Targets are 1265 and 1290
  i   S
-------
  1   1
  2   4
  3   9
  4  16
  5  25
  6  36
  7  49
  8  64
  9  81
 10 100
 11 121
 12 144
 13 169
 14 196
 15 225
 16 256
 17 289
 18 324
 19 361
 20 400
 21 441
 22 484
subsequence for 1265:
36
144
324
361
400
subsequence for 1290:
4
9
16
49
64
81
100
121
169
196
225
256