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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 34 |
| 4 | 193 |
| 5 | 1036 |
| 6 | 5059 |
| 7 | 23094 |
| 8 | 101329 |
| 9 | 434908 |
| 10 | 1843411 |
| 11 | 7753582 |
| 12 | 32441017 |
| 13 | 135195464 |
| 14 | 561615643 |
| 15 | 2326740526 |
| 16 | 9617257185 |
| 17 | 39671268460 |
| 18 | 163352388259 |
| 19 | 671559953358 |
| 20 | 2756930503801 |
| 21 | 11303415274600 |
| 22 | 46290177094635 |
| 23 | 189368906606254 |
| 24 | 773942488241473 |
| 25 | 3160265160763176 |
[1,2,7,34,193,1036,5059,23094,101329,434908, 1843411,7753582,32441017,135195464,561615643, 2326740526,9617257185,39671268460,163352388259, 671559953358,2756930503801,11303415274600, 46290177094635,189368906606254,773942488241473, 3160265160763176] |