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A222352 as a simple table
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 5 |
| 4 | 73 |
| 5 | 1054 |
| 6 | 67171 |
| 7 | 4355033 |
| 8 | 1211912419 |
| 9 | 345057233257 |
| 10 | 408476458623284 |
[1,1,5,73,1054,67171,4355033,1211912419, 345057233257,408476458623284] |