The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 18 |
| 2 | 682 |
| 3 | 55762 |
| 4 | 7861330 |
| 5 | 1695960882 |
| 6 | 519152347066 |
| 7 | 213968420883442 |
| 8 | 114231299480266658 |
| 9 | 76681416778961132498 |
| 10 | 63215479683812222209738 |
| 11 | 62785613460405843207533202 |
| 12 | 73943247063260517632498040818 |
[2,18,682,55762,7861330,1695960882,519152347066, 213968420883442,114231299480266658, 76681416778961132498,63215479683812222209738, 62785613460405843207533202, 73943247063260517632498040818] |