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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 12 |
| 3 | 92 |
| 4 | 912 |
| 5 | 10772 |
| 6 | 148512 |
| 7 | 2328692 |
| 8 | 40842912 |
| 9 | 791302772 |
| 10 | 16767551712 |
| 11 | 385382491892 |
| 12 | 9542377300512 |
| 13 | 253105962752372 |
| 14 | 7156766466076512 |
| 15 | 214814484529608692 |
| 16 | 6819311473596695712 |
| 17 | 228212485803422931572 |
| 18 | 8028037725386962194912 |
| 19 | 296094910181041530831092 |
[1,2,12,92,912,10772,148512,2328692,40842912, 791302772,16767551712,385382491892,9542377300512, 253105962752372,7156766466076512, 214814484529608692,6819311473596695712, 228212485803422931572,8028037725386962194912, 296094910181041530831092] |