| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 14 |
| 3 | 110 |
| 4 | 3001 |
| 5 | 26451 |
| 6 | 767560 |
| 7 | 6812794 |
| 8 | 198409297 |
| 9 | 1761748159 |
| 10 | 51317680568 |
| 11 | 455678075546 |
| 12 | 13273519382093 |
| 13 | 117863060852067 |
| 14 | 3433253982499552 |
| 15 | 30485799411892266 |
| 16 | 888026282079787049 |
| 17 | 7885286478349158743 |
[1,14,110,3001,26451,767560,6812794,198409297, 1761748159,51317680568,455678075546, 13273519382093,117863060852067,3433253982499552, 30485799411892266,888026282079787049, 7885286478349158743] |