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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 29 |
| 4 | 122 |
| 5 | 516 |
| 6 | 2252 |
| 7 | 10061 |
| 8 | 45338 |
| 9 | 207471 |
| 10 | 956325 |
| 11 | 4442616 |
| 12 | 20775644 |
| 13 | 97621228 |
| 14 | 460944623 |
| 15 | 2184762361 |
| 16 | 10390395273 |
| 17 | 49569323130 |
| 18 | 237091907445 |
| 19 | 1136794003705 |
| 20 | 5462262285041 |
| 21 | 26296634932742 |
| 22 | 126823383793412 |
| 23 | 612613444030350 |
| 24 | 2963558441001062 |
| 25 | 14355667355543549 |
| 26 | 69625744702294649 |
[1,2,8,29,122,516,2252,10061,45338,207471,956325, 4442616,20775644,97621228,460944623,2184762361, 10390395273,49569323130,237091907445, 1136794003705,5462262285041,26296634932742, 126823383793412,612613444030350,2963558441001062, 14355667355543549,69625744702294649] |