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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 35 |
| 3 | 554 |
| 4 | 15297 |
| 5 | 451842 |
| 6 | 15929824 |
| 7 | 601077640 |
| 8 | 24488754772 |
| 9 | 1046792248856 |
| 10 | 46718718597567 |
| 11 | 2155032002133834 |
| 12 | 102259392504591235 |
| 13 | 4967499746642163574 |
| 14 | 246231868462969357492 |
| 15 | 12419324761881256326288 |
| 16 | 635990044563649443993091 |
| 17 | 33006906229799699591298070 |
[1,2,35,554,15297,451842,15929824,601077640, 24488754772,1046792248856,46718718597567, 2155032002133834,102259392504591235, 4967499746642163574,246231868462969357492, 12419324761881256326288,635990044563649443993091, 33006906229799699591298070] |