| n | a(n) |
|---|---|
| 2 | 2924 |
| 3 | 10856 |
| 4 | 66992 |
| 5 | 2090656 |
| 6 | 7684672 |
| 7 | 1762592896 |
| 8 | 750555392 |
| 9 | 7076729344 |
| 10 | 25941935104 |
| 11 | 161905117184 |
| 12 | 3949454626816 |
| 13 | 56692308189184 |
| 14 | 162225706778624 |
| 15 | 5469803815141376 |
| 16 | 21548132777132032 |
| 17 | 48336776233877504 |
| 18 | 2961919695995011072 |
| 19 | 5591729105229316096 |
[2924,10856,66992,2090656,7684672,1762592896, 750555392,7076729344,25941935104,161905117184, 3949454626816,56692308189184,162225706778624, 5469803815141376,21548132777132032, 48336776233877504,2961919695995011072, 5591729105229316096] |
