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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 70 |
| 3 | 34650 |
| 4 | 16140983 |
| 5 | 8854463421 |
| 6 | 5532980565456 |
| 7 | 3798011394008444 |
| 8 | 2798461806432513085 |
| 9 | 2179251644112128926809 |
| 10 | 1774029308605731224234922 |
| 11 | 1497612094060753803137726582 |
| 12 | 1303178757814574200714348639251 |
| 13 | 1163471249071555286949793002571005 |
[1,1,70,34650,16140983,8854463421,5532980565456, 3798011394008444,2798461806432513085, 2179251644112128926809,1774029308605731224234922, 1497612094060753803137726582, 1303178757814574200714348639251, 1163471249071555286949793002571005] |