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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 8 |
| 4 | 64 |
| 5 | 512 |
| 6 | 4096 |
| 7 | 11543176 |
| 8 | 13997521 |
| 9 | 738763264 |
| 10 | 5910106112 |
| 11 | 38477541376 |
| 12 | 47280848896 |
| 13 | 2462562648064 |
| 14 | 19700501184512 |
| 15 | 129754026714376 |
| 16 | 131491746445051 |
| 17 | 157604009476096 |
| 18 | 8304257709720064 |
| 19 | 66434061677760512 |
[0,1,8,64,512,4096,11543176,13997521,738763264, 5910106112,38477541376,47280848896,2462562648064, 19700501184512,129754026714376,131491746445051, 157604009476096,8304257709720064, 66434061677760512] |