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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 6 |
| 3 | 238 |
| 4 | 31710 |
| 5 | 16510910 |
| 6 | 34089189246 |
| 7 | 280371153272574 |
| 8 | 9205322385119247870 |
| 9 | 1207744073945406663293950 |
| 10 | 633515663914742881158342637566 |
| 11 | 1328903397983747395279166325955489790 |
| 12 | 11149011303623843458013522930838119932485630 |
| 13 | 374121581799746201009538413109130562019709006364670 |
[0,6,238,31710,16510910,34089189246, 280371153272574,9205322385119247870, 1207744073945406663293950, 633515663914742881158342637566, 1328903397983747395279166325955489790, 11149011303623843458013522930838119932485630, 37412158179974620100953841310913056201970900636467\ 0] |