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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 29 |
| 4 | 125 |
| 5 | 520 |
| 6 | 2354 |
| 7 | 10373 |
| 8 | 48113 |
| 9 | 219149 |
| 10 | 1032413 |
| 11 | 4798763 |
| 12 | 22844206 |
| 13 | 107661986 |
| 14 | 516385175 |
| 15 | 2457653482 |
| 16 | 11854293811 |
| 17 | 56833081977 |
| 18 | 275327363426 |
| 19 | 1327416587369 |
| 20 | 6452978520945 |
| 21 | 31248899267486 |
| 22 | 152338436310684 |
| 23 | 740324533707148 |
| 24 | 3617484420892319 |
| 25 | 17631025564056138 |
| 26 | 86319516916318047 |
[1,2,8,29,125,520,2354,10373,48113,219149,1032413, 4798763,22844206,107661986,516385175,2457653482, 11854293811,56833081977,275327363426, 1327416587369,6452978520945,31248899267486, 152338436310684,740324533707148,3617484420892319, 17631025564056138,86319516916318047] |