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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 14 |
| 3 | 150 |
| 4 | 1942 |
| 5 | 29174 |
| 6 | 505318 |
| 7 | 9957798 |
| 8 | 219177942 |
| 9 | 5303780758 |
| 10 | 139554619206 |
| 11 | 3962202725254 |
| 12 | 120644298135478 |
| 13 | 3918518255860342 |
| 14 | 135117086088186662 |
| 15 | 4925731652244913766 |
| 16 | 189170325211554345366 |
| 17 | 7629758975467859662678 |
| 18 | 322296334808561664346886 |
[1,2,14,150,1942,29174,505318,9957798,219177942, 5303780758,139554619206,3962202725254, 120644298135478,3918518255860342, 135117086088186662,4925731652244913766, 189170325211554345366,7629758975467859662678, 322296334808561664346886] |