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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 105 |
| 4 | 9009 |
| 5 | 3128697 |
| 6 | 4379132901 |
| 7 | 24645892667825 |
| 8 | 556965289746386625 |
| 9 | 50494858759761851228625 |
| 10 | 18354114596951084500741513125 |
| 11 | 26735929307256782047733105984465625 |
| 12 | 156023842049488378026019378718492161640625 |
| 13 | 3646806710157227756289546514549111188854996015625 |
[1,1,5,105,9009,3128697,4379132901,24645892667825, 556965289746386625,50494858759761851228625, 18354114596951084500741513125, 26735929307256782047733105984465625, 156023842049488378026019378718492161640625, 3646806710157227756289546514549111188854996015625] |