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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 395 |
| 3 | 2048 |
| 4 | 10673 |
| 5 | 37442 |
| 6 | 108563 |
| 7 | 678228 |
| 8 | 2808885 |
| 9 | 8984618 |
| 10 | 24611755 |
| 11 | 56750678 |
| 12 | 122018031 |
| 13 | 231977010 |
| 14 | 516600553 |
| 15 | 1008739178 |
| 16 | 1888146937 |
| 17 | 3233478724 |
| 18 | 5370329949 |
| 19 | 8379543498 |
| 20 | 12801884207 |
| 21 | 20101322572 |
| 22 | 30981729383 |
| 23 | 45635449254 |
[2,395,2048,10673,37442,108563,678228,2808885, 8984618,24611755,56750678,122018031,231977010, 516600553,1008739178,1888146937,3233478724, 5370329949,8379543498,12801884207,20101322572, 30981729383,45635449254] |