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| n | a(n) |
|---|---|
| 1 | 1024 |
| 2 | 4100 |
| 3 | 19648 |
| 4 | 103508 |
| 5 | 580664 |
| 6 | 3419648 |
| 7 | 20984924 |
| 8 | 133538996 |
| 9 | 877751236 |
| 10 | 5937279840 |
| 11 | 41180193352 |
| 12 | 291859775552 |
| 13 | 2106967145904 |
| 14 | 15448890481568 |
| 15 | 114765555945488 |
| 16 | 861942483797204 |
| 17 | 6533144250310688 |
| 18 | 49899718750389380 |
| 19 | 383593821097441412 |
| 20 | 2964842429047018248 |
[1024,4100,19648,103508,580664,3419648,20984924, 133538996,877751236,5937279840,41180193352, 291859775552,2106967145904,15448890481568, 114765555945488,861942483797204,6533144250310688, 49899718750389380,383593821097441412, 2964842429047018248] |