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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 5 |
| 2 | 29 |
| 3 | 155 |
| 4 | 833 |
| 5 | 4475 |
| 6 | 24041 |
| 7 | 129155 |
| 8 | 693857 |
| 9 | 3727595 |
| 10 | 20025689 |
| 11 | 107583635 |
| 12 | 577969553 |
| 13 | 3105015035 |
| 14 | 16681014281 |
| 15 | 89615101475 |
| 16 | 481437535937 |
| 17 | 2586417882635 |
| 18 | 13894964485049 |
| 19 | 74647658190515 |
| 20 | 401028219922673 |
| 21 | 2154436415994395 |
| 22 | 11574238519817321 |
| 23 | 62180065431075395 |
[2,5,29,155,833,4475,24041,129155,693857,3727595, 20025689,107583635,577969553,3105015035, 16681014281,89615101475,481437535937, 2586417882635,13894964485049,74647658190515, 401028219922673,2154436415994395, 11574238519817321,62180065431075395] |