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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 36 |
| 3 | 372 |
| 4 | 4624 |
| 5 | 72852 |
| 6 | 996004 |
| 7 | 14644480 |
| 8 | 210076036 |
| 9 | 3037508500 |
| 10 | 43841659456 |
| 11 | 632865629460 |
| 12 | 9136533928900 |
| 13 | 131888305215984 |
| 14 | 1903927875896484 |
| 15 | 27484425467991212 |
| 16 | 396757552143468096 |
| 17 | 5727474581359467924 |
[0,36,372,4624,72852,996004,14644480,210076036, 3037508500,43841659456,632865629460,9136533928900, 131888305215984,1903927875896484, 27484425467991212,396757552143468096, 5727474581359467924] |