| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 51 |
| 2 | 2599 |
| 3 | 132498 |
| 4 | 6754799 |
| 5 | 344362251 |
| 6 | 17555720002 |
| 7 | 894997357851 |
| 8 | 45627309530399 |
| 9 | 2326097788692498 |
| 10 | 118585359913786999 |
| 11 | 6045527257814444451 |
| 12 | 308203304788622880002 |
| 13 | 15712323016961952435651 |
| 14 | 801020270560270951338199 |
[2,51,2599,132498,6754799,344362251,17555720002, 894997357851,45627309530399,2326097788692498, 118585359913786999,6045527257814444451, 308203304788622880002,15712323016961952435651, 801020270560270951338199] |