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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 360 |
| 3 | 10896 |
| 4 | 186576 |
| 5 | 2700432 |
| 6 | 35485776 |
| 7 | 437924880 |
| 8 | 5169543120 |
| 9 | 59031049104 |
| 10 | 656886585168 |
| 11 | 7159989801744 |
| 12 | 76729919248080 |
| 13 | 810700618461840 |
| 14 | 8463178886657616 |
| 15 | 87441690785378832 |
| 16 | 895373932606109136 |
[0,360,10896,186576,2700432,35485776,437924880, 5169543120,59031049104,656886585168,7159989801744, 76729919248080,810700618461840,8463178886657616, 87441690785378832,895373932606109136] |