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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 51 |
| 4 | 2635 |
| 5 | 321315 |
| 6 | 79244571 |
| 7 | 35534634163 |
| 8 | 26790753983211 |
| 9 | 31980883597248195 |
| 10 | 57639013468037578555 |
| 11 | 150903079070698932214611 |
| 12 | 555841597474333410204232203 |
| 13 | 2804056152239296833617706906211 |
| 14 | 18933384891214439885244043983467355 |
[0,1,3,51,2635,321315,79244571,35534634163, 26790753983211,31980883597248195, 57639013468037578555,150903079070698932214611, 555841597474333410204232203, 2804056152239296833617706906211, 18933384891214439885244043983467355] |