The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 10 | 102247563 |
| 11 | 8624400680 |
| 12 | 408962920820 |
| 13 | 14395560938040 |
| 14 | 419691762832900 |
| 15 | 10733397639516016 |
| 16 | 249286917950186760 |
| 17 | 5378992003398157520 |
| 18 | 109550762660946047540 |
| 19 | 2130231901794898870880 |
| 20 | 39890088439337327537706 |
| 21 | 724087830188007677450600 |
| 22 | 12806950694169650253597100 |
[102247563,8624400680,408962920820,14395560938040, 419691762832900,10733397639516016, 249286917950186760,5378992003398157520, 109550762660946047540,2130231901794898870880, 39890088439337327537706,724087830188007677450600, 12806950694169650253597100] |