The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 82 |
| 4 | 3707 |
| 5 | 642457 |
| 6 | 446020582 |
| 7 | 1288155051832 |
| 8 | 15905066118254957 |
| 9 | 856874264098480364332 |
| 10 | 204616369654716156089739332 |
| 11 | 219286214391142987407272329973707 |
| 12 | 1065403165201779499307991460987124895582 |
| 13 | 23663347632778954225192551079067428619449114332 |
[1,2,7,82,3707,642457,446020582,1288155051832, 15905066118254957,856874264098480364332, 204616369654716156089739332, 219286214391142987407272329973707, 1065403165201779499307991460987124895582, 23663347632778954225192551079067428619449114332] |