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| n | a(n) |
|---|---|
| 1 | 256 |
| 2 | 10000 |
| 3 | 86701 |
| 4 | 497958 |
| 5 | 2332222 |
| 6 | 9331553 |
| 7 | 32806574 |
| 8 | 103452812 |
| 9 | 297410156 |
| 10 | 789731500 |
| 11 | 1957606141 |
| 12 | 4569537752 |
| 13 | 10116846904 |
| 14 | 21372349639 |
| 15 | 43300242010 |
| 16 | 84493906854 |
| 17 | 159387825448 |
| 18 | 291579791772 |
| 19 | 518714491591 |
| 20 | 899524090772 |
[256,10000,86701,497958,2332222,9331553,32806574, 103452812,297410156,789731500,1957606141, 4569537752,10116846904,21372349639,43300242010, 84493906854,159387825448,291579791772, 518714491591,899524090772] |