The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 9 |
| 4 | 23 |
| 5 | 353 |
| 6 | 10519 |
| 7 | 12086209 |
| 8 | 1174153011340170531 |
| 9 | 73582975079922326904310062621361286634299329277087298285 |
[0,1,3,9,23,353,10519,12086209, 1174153011340170531, 73582975079922326904310062621361286634299329277087\ 298285] |