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| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 35 |
| 2 | 210 |
| 3 | 1259 |
| 4 | 7548 |
| 5 | 45252 |
| 6 | 271296 |
| 7 | 1626481 |
| 8 | 9751122 |
| 9 | 58460185 |
| 10 | 350482050 |
| 11 | 2101219272 |
| 12 | 12597285450 |
| 13 | 75523579487 |
| 14 | 452780964690 |
| 15 | 2714524435655 |
| 16 | 16274188816248 |
| 17 | 97567447965516 |
| 18 | 584938949030724 |
| 19 | 3506841484816717 |
| 20 | 21024308981321682 |
| 21 | 126045494230596949 |
[6,35,210,1259,7548,45252,271296,1626481,9751122, 58460185,350482050,2101219272,12597285450, 75523579487,452780964690,2714524435655, 16274188816248,97567447965516,584938949030724, 3506841484816717,21024308981321682, 126045494230596949] |