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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 100 |
| 2 | 4950 |
| 3 | 161700 |
| 4 | 3921225 |
| 5 | 75287520 |
| 6 | 1192052400 |
| 7 | 16007560800 |
| 8 | 186087894300 |
| 9 | 1902231808400 |
| 10 | 17310309456440 |
| 11 | 141629804643600 |
| 12 | 1050421051106700 |
| 13 | 7110542499799200 |
| 14 | 44186942677323600 |
| 15 | 253338471349988640 |
| 16 | 1345860629046814650 |
| 17 | 6650134872937201800 |
[1,100,4950,161700,3921225,75287520,1192052400, 16007560800,186087894300,1902231808400, 17310309456440,141629804643600,1050421051106700, 7110542499799200,44186942677323600, 253338471349988640,1345860629046814650, 6650134872937201800] |