| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 32 |
| 2 | 685 |
| 3 | 12260 |
| 4 | 198121 |
| 5 | 2997512 |
| 6 | 43322245 |
| 7 | 605523020 |
| 8 | 8251539841 |
| 9 | 110243798192 |
| 10 | 1449890883805 |
| 11 | 18826690025780 |
| 12 | 241910703467161 |
| 13 | 3081364962170072 |
| 14 | 38962058064701365 |
| 15 | 489593051613776540 |
| 16 | 6119501542765132081 |
| 17 | 76138929852279201152 |
| 18 | 943571277592721190925 |
[1,32,685,12260,198121,2997512,43322245,605523020, 8251539841,110243798192,1449890883805, 18826690025780,241910703467161,3081364962170072, 38962058064701365,489593051613776540, 6119501542765132081,76138929852279201152, 943571277592721190925] |