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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 545 |
| 4 | 18516 |
| 5 | 629001 |
| 6 | 21367520 |
| 7 | 725866681 |
| 8 | 24658099636 |
| 9 | 837649520945 |
| 10 | 28455425612496 |
| 11 | 966646821303921 |
| 12 | 32837536498720820 |
| 13 | 1115509594135203961 |
| 14 | 37894488664098213856 |
| 15 | 1287297104985204067145 |
| 16 | 43730207080832840069076 |
| 17 | 1485539743643331358281441 |
[1,16,545,18516,629001,21367520,725866681, 24658099636,837649520945,28455425612496, 966646821303921,32837536498720820, 1115509594135203961,37894488664098213856, 1287297104985204067145,43730207080832840069076, 1485539743643331358281441] |