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| n | a(n) |
|---|---|
| 1 | 14 |
| 2 | 18 |
| 3 | 120 |
| 4 | 435 |
| 5 | 3516 |
| 6 | 25441 |
| 7 | 212957 |
| 8 | 1933819 |
| 9 | 17971162 |
| 10 | 172292518 |
| 11 | 1649722196 |
| 12 | 15907967878 |
| 13 | 153952727468 |
| 14 | 1485280127413 |
| 15 | 14446587454682 |
| 16 | 139301828808661 |
| 17 | 1359137046700841 |
[14,18,120,435,3516,25441,212957,1933819,17971162, 172292518,1649722196,15907967878,153952727468, 1485280127413,14446587454682,139301828808661, 1359137046700841] |