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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 8 |
| 3 | 182 |
| 4 | 6962 |
| 5 | 419242 |
| 6 | 36634192 |
| 7 | 4488812596 |
| 8 | 722684103164 |
| 9 | 148732979255324 |
| 10 | 38081859158891744 |
| 11 | 11886289198519022344 |
| 12 | 4436616366171778495192 |
| 13 | 1951865016371020657730488 |
| 14 | 999444614538375532106921408 |
| 15 | 589291073127565867170680837168 |
| 16 | 396337742242710677353781867268368 |
| 17 | 301596359950397359016053774993717264 |
| 18 | 257797318556710190428189878485023244416 |
[1,1,8,182,6962,419242,36634192,4488812596, 722684103164,148732979255324,38081859158891744, 11886289198519022344,4436616366171778495192, 1951865016371020657730488, 999444614538375532106921408, 589291073127565867170680837168, 396337742242710677353781867268368, 301596359950397359016053774993717264, 257797318556710190428189878485023244416] |