The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 19 |
| 3 | 271 |
| 4 | 7365 |
| 5 | 326011 |
| 6 | 21295783 |
| 7 | 1924223799 |
| 8 | 229714292041 |
| 9 | 35007742568755 |
| 10 | 6630796801779771 |
| 11 | 1527863209528564063 |
| 12 | 420814980652048751629 |
| 13 | 136526522051229388285611 |
[1,3,19,271,7365,326011,21295783,1924223799, 229714292041,35007742568755,6630796801779771, 1527863209528564063,420814980652048751629, 136526522051229388285611] |