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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 10 |
| 3 | 38 |
| 4 | 154 |
| 5 | 614 |
| 6 | 2458 |
| 7 | 9830 |
| 8 | 39322 |
| 9 | 157286 |
| 10 | 629146 |
| 11 | 2516582 |
| 12 | 10066330 |
| 13 | 40265318 |
| 14 | 161061274 |
| 15 | 644245094 |
| 16 | 2576980378 |
| 17 | 10307921510 |
| 18 | 41231686042 |
| 19 | 164926744166 |
| 20 | 659706976666 |
| 21 | 2638827906662 |
| 22 | 10555311626650 |
| 23 | 42221246506598 |
[1,2,10,38,154,614,2458,9830,39322,157286,629146, 2516582,10066330,40265318,161061274,644245094, 2576980378,10307921510,41231686042,164926744166, 659706976666,2638827906662,10555311626650, 42221246506598] |