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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 19 |
| 5 | 45 |
| 6 | 173 |
| 7 | 469 |
| 8 | 1895 |
| 9 | 5639 |
| 10 | 22987 |
| 11 | 72543 |
| 12 | 303393 |
| 13 | 997591 |
| 14 | 4202367 |
| 15 | 14311543 |
| 16 | 61189337 |
| 17 | 213097925 |
| 18 | 917264035 |
| 19 | 3269434741 |
| 20 | 14199987201 |
| 21 | 51345567007 |
| 22 | 224376013183 |
| 23 | 824557694411 |
| 24 | 3623559192769 |
| 25 | 13456700819921 |
| 26 | 59452316544329 |
| 27 | 223377434078431 |
| 28 | 990584974423035 |
| 29 | 3753151591363015 |
[1,1,3,5,19,45,173,469,1895,5639,22987,72543, 303393,997591,4202367,14311543,61189337,213097925, 917264035,3269434741,14199987201,51345567007, 224376013183,824557694411,3623559192769, 13456700819921,59452316544329,223377434078431, 990584974423035,3753151591363015] |