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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 58 |
| 3 | 121 |
| 4 | 834 |
| 5 | 2095 |
| 6 | 12019 |
| 7 | 48014 |
| 8 | 225222 |
| 9 | 831160 |
| 10 | 3944345 |
| 11 | 16773428 |
| 12 | 72763421 |
| 13 | 300929135 |
| 14 | 1319535052 |
| 15 | 5704373966 |
| 16 | 24566253078 |
| 17 | 104395539577 |
| 18 | 449962758422 |
| 19 | 1938348799951 |
| 20 | 8344538708719 |
| 21 | 35799140191716 |
| 22 | 153820463246984 |
[6,58,121,834,2095,12019,48014,225222,831160, 3944345,16773428,72763421,300929135,1319535052, 5704373966,24566253078,104395539577,449962758422, 1938348799951,8344538708719,35799140191716, 153820463246984] |