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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 45 |
| 3 | 1074 |
| 4 | 25169 |
| 5 | 741031 |
| 6 | 20734591 |
| 7 | 580702029 |
| 8 | 16327953218 |
| 9 | 458323749120 |
| 10 | 12865640919987 |
| 11 | 361242608740754 |
| 12 | 10141976947455132 |
| 13 | 284740846034105659 |
| 14 | 7994281018770192184 |
| 15 | 224444092268529045038 |
| 16 | 6301399036645662384611 |
[0,45,1074,25169,741031,20734591,580702029, 16327953218,458323749120,12865640919987, 361242608740754,10141976947455132, 284740846034105659,7994281018770192184, 224444092268529045038,6301399036645662384611] |