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A279567 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 21 |
| 5 | 82 |
| 6 | 343 |
| 7 | 1509 |
| 8 | 6893 |
| 9 | 32419 |
| 10 | 156058 |
| 11 | 765578 |
| 12 | 3815062 |
| 13 | 19263736 |
| 14 | 98368919 |
| 15 | 507197436 |
| 16 | 2637242188 |
| 17 | 13814247530 |
| 18 | 72834238423 |
| 19 | 386244387688 |
| 20 | 2058933104170 |
| 21 | 11026807340592 |
| 22 | 59304897232442 |
| 23 | 320181600386661 |
| 24 | 1734685419170666 |
| 25 | 9428340999504441 |
[1,1,2,6,21,82,343,1509,6893,32419,156058,765578, 3815062,19263736,98368919,507197436,2637242188, 13814247530,72834238423,386244387688, 2058933104170,11026807340592,59304897232442, 320181600386661,1734685419170666,9428340999504441] |