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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 14 |
| 3 | 59 |
| 4 | 286 |
| 5 | 1302 |
| 6 | 6396 |
| 7 | 30093 |
| 8 | 148762 |
| 9 | 712466 |
| 10 | 3534356 |
| 11 | 17112094 |
| 12 | 85071796 |
| 13 | 414867684 |
| 14 | 2065425648 |
| 15 | 10123488801 |
| 16 | 50449616658 |
| 17 | 248190199130 |
| 18 | 1237712225980 |
| 19 | 6106027045386 |
| 20 | 30466402339948 |
| 21 | 150625539734428 |
| 22 | 751853521099392 |
| 23 | 3723506571470266 |
| 24 | 18591722017819844 |
| 25 | 92200733893743892 |
[1,3,14,59,286,1302,6396,30093,148762,712466, 3534356,17112094,85071796,414867684,2065425648, 10123488801,50449616658,248190199130, 1237712225980,6106027045386,30466402339948, 150625539734428,751853521099392,3723506571470266, 18591722017819844,92200733893743892] |