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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 2 |
| 3 | 314 |
| 4 | 396 |
| 5 | 15965 |
| 6 | 58808 |
| 7 | 117484 |
| 8 | 1998383 |
| 9 | 31513432 |
| 10 | 113366285 |
| 11 | 1133662850 |
| 12 | 3427321528 |
| 13 | 20431928079 |
| 14 | 301208291197 |
| 15 | 3012082911970 |
| 16 | 30120829119700 |
| 17 | 201509499488197 |
| 18 | 154050882984314 |
| 19 | 3168922427753589 |
| 20 | 20290329092162747 |
| 21 | 202903290921627470 |
[0,3,2,314,396,15965,58808,117484,1998383, 31513432,113366285,1133662850,3427321528, 20431928079,301208291197,3012082911970, 30120829119700,201509499488197,154050882984314, 3168922427753589,20290329092162747, 202903290921627470] |