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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 353 |
| 3 | 451 |
| 4 | 4767 |
| 5 | 30780 |
| 6 | 150617 |
| 7 | 1261845 |
| 8 | 8555774 |
| 9 | 57269902 |
| 10 | 425814658 |
| 11 | 2966495520 |
| 12 | 20993370991 |
| 13 | 151153645049 |
| 14 | 1069021092485 |
| 15 | 7615451236569 |
| 16 | 54386372056788 |
| 17 | 386712508375753 |
| 18 | 2755713914705831 |
| 19 | 19642030950592575 |
[64,353,451,4767,30780,150617,1261845,8555774, 57269902,425814658,2966495520,20993370991, 151153645049,1069021092485,7615451236569, 54386372056788,386712508375753,2755713914705831, 19642030950592575] |