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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 399 |
| 3 | 34531 |
| 4 | 1592250 |
| 5 | 71707838 |
| 6 | 3007934404 |
| 7 | 120672330232 |
| 8 | 4702791428260 |
| 9 | 179057922328623 |
| 10 | 6695014133297498 |
| 11 | 246668281038206742 |
| 12 | 8977573150142192566 |
| 13 | 323379332405824735003 |
| 14 | 11545468737993581686038 |
| 15 | 409038243289396611366132 |
[0,399,34531,1592250,71707838,3007934404, 120672330232,4702791428260,179057922328623, 6695014133297498,246668281038206742, 8977573150142192566,323379332405824735003, 11545468737993581686038,409038243289396611366132] |