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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 256 |
| 3 | 30375 |
| 4 | 5308416 |
| 5 | 1313046875 |
| 6 | 440301256704 |
| 7 | 193010051319183 |
| 8 | 107374182400000000 |
| 9 | 73994897046174912819 |
| 10 | 61917364224000000000000 |
| 11 | 61870237399093306018139447 |
| 12 | 72790360926157879387298463744 |
| 13 | 99617732553594016079725341796875 |
[0,3,256,30375,5308416,1313046875,440301256704, 193010051319183,107374182400000000, 73994897046174912819,61917364224000000000000, 61870237399093306018139447, 72790360926157879387298463744, 99617732553594016079725341796875] |