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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 10 |
| 3 | 94 |
| 4 | 1314 |
| 5 | 24494 |
| 6 | 572418 |
| 7 | 16109678 |
| 8 | 530772610 |
| 9 | 20049256686 |
| 10 | 854425665410 |
| 11 | 40560727143534 |
| 12 | 2122785621956226 |
| 13 | 121440903560075246 |
| 14 | 7539867236251002242 |
| 15 | 504946360197545803630 |
| 16 | 36284349255747713008770 |
| 17 | 2784785703026225861819118 |
[1,2,10,94,1314,24494,572418,16109678,530772610, 20049256686,854425665410,40560727143534, 2122785621956226,121440903560075246, 7539867236251002242,504946360197545803630, 36284349255747713008770,2784785703026225861819118] |