The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 5 | 501 |
| 6 | 9945 |
| 7 | 121710 |
| 8 | 1185360 |
| 9 | 10096795 |
| 10 | 78808600 |
| 11 | 578849355 |
| 12 | 4067705855 |
| 13 | 27649153955 |
| 14 | 183168119565 |
| 15 | 1189058740200 |
| 16 | 7593928600995 |
| 17 | 47855567247145 |
| 18 | 298255270385350 |
| 19 | 1841612720379730 |
| 20 | 11281413505991390 |
| 21 | 68637389125392080 |
| 22 | 415119249476398580 |
| 23 | 2497526622600665470 |
[501,9945,121710,1185360,10096795,78808600, 578849355,4067705855,27649153955,183168119565, 1189058740200,7593928600995,47855567247145, 298255270385350,1841612720379730, 11281413505991390,68637389125392080, 415119249476398580,2497526622600665470] |