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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 62 |
| 3 | 259 |
| 4 | 3246 |
| 5 | 25295 |
| 6 | 237905 |
| 7 | 1783508 |
| 8 | 14742650 |
| 9 | 131257701 |
| 10 | 1161104389 |
| 11 | 9477920113 |
| 12 | 79981857183 |
| 13 | 698216221745 |
| 14 | 5973531188672 |
| 15 | 50458097968498 |
| 16 | 431717763820004 |
| 17 | 3722514631710593 |
| 18 | 31795825068196111 |
| 19 | 270678277789108068 |
[12,62,259,3246,25295,237905,1783508,14742650, 131257701,1161104389,9477920113,79981857183, 698216221745,5973531188672,50458097968498, 431717763820004,3722514631710593, 31795825068196111,270678277789108068] |