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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 61 |
| 3 | 376 |
| 4 | 5580 |
| 5 | 79185 |
| 6 | 1105513 |
| 7 | 15790468 |
| 8 | 223280583 |
| 9 | 3167599806 |
| 10 | 44921636772 |
| 11 | 636902565140 |
| 12 | 9032140947293 |
| 13 | 128074347136150 |
| 14 | 1816136639942716 |
| 15 | 25753285123979094 |
| 16 | 365187542346834275 |
| 17 | 5178454500347438324 |
[0,61,376,5580,79185,1105513,15790468,223280583, 3167599806,44921636772,636902565140,9032140947293, 128074347136150,1816136639942716, 25753285123979094,365187542346834275, 5178454500347438324] |