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| n | a(n) |
|---|---|
| 1 | 258 |
| 2 | 75540 |
| 3 | 21813374 |
| 4 | 6219477628 |
| 5 | 1778793691226 |
| 6 | 506611939408296 |
| 7 | 144633234041629586 |
| 8 | 41228312635698988592 |
| 9 | 11764207025789049116296 |
| 10 | 3354764803854586870996290 |
| 11 | 957059647333850993834828574 |
[258,75540,21813374,6219477628,1778793691226, 506611939408296,144633234041629586, 41228312635698988592,11764207025789049116296, 3354764803854586870996290, 957059647333850993834828574] |