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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 16 |
| 3 | 57 |
| 4 | 182 |
| 5 | 712 |
| 6 | 2832 |
| 7 | 10696 |
| 8 | 41107 |
| 9 | 157988 |
| 10 | 605815 |
| 11 | 2325447 |
| 12 | 8925254 |
| 13 | 34249876 |
| 14 | 131449823 |
| 15 | 504477864 |
| 16 | 1936065901 |
| 17 | 7430270652 |
| 18 | 28515874031 |
| 19 | 109438102794 |
| 20 | 420001732258 |
| 21 | 1611882175123 |
| 22 | 6186079927414 |
| 23 | 23740935035474 |
| 24 | 91112943131103 |
[1,16,57,182,712,2832,10696,41107,157988,605815, 2325447,8925254,34249876,131449823,504477864, 1936065901,7430270652,28515874031,109438102794, 420001732258,1611882175123,6186079927414, 23740935035474,91112943131103] |