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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 72 |
| 3 | 504 |
| 4 | 3024 |
| 5 | 15120 |
| 6 | 60480 |
| 7 | 181440 |
| 8 | 362880 |
| 9 | 362880 |
| 10 | 362898 |
| 11 | 363186 |
| 12 | 367776 |
| 13 | 436320 |
| 14 | 1391040 |
| 15 | 13728960 |
| 16 | 160755840 |
| 17 | 1764685440 |
| 18 | 17643588480 |
| 19 | 17643588507 |
| 20 | 17643589182 |
| 21 | 17643606030 |
| 22 | 17644009680 |
| 23 | 17653276080 |
| 24 | 17856715680 |
| 25 | 22119259680 |
| 26 | 107157012480 |
[9,72,504,3024,15120,60480,181440,362880,362880, 362898,363186,367776,436320,1391040,13728960, 160755840,1764685440,17643588480,17643588507, 17643589182,17643606030,17644009680,17653276080, 17856715680,22119259680,107157012480] |