| n | a(n) |
|---|---|
| 1 | 22 |
| 2 | 484 |
| 3 | 1140 |
| 4 | 9060 |
| 5 | 60762 |
| 6 | 264568 |
| 7 | 1806676 |
| 8 | 11731102 |
| 9 | 56370696 |
| 10 | 366295198 |
| 11 | 2305584648 |
| 12 | 11797984744 |
| 13 | 74304216762 |
| 14 | 457672368566 |
| 15 | 2444078888852 |
| 16 | 15070430981770 |
| 17 | 91449174571822 |
| 18 | 502943271185454 |
| 19 | 3056247964546120 |
[22,484,1140,9060,60762,264568,1806676,11731102, 56370696,366295198,2305584648,11797984744, 74304216762,457672368566,2444078888852, 15070430981770,91449174571822,502943271185454, 3056247964546120] |