The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 256 |
| 2 | 3020 |
| 3 | 3020 |
| 4 | 35874 |
| 5 | 83520 |
| 6 | 35874 |
| 7 | 427680 |
| 8 | 2333864 |
| 9 | 2333864 |
| 10 | 427680 |
| 11 | 5098640 |
| 12 | 65619060 |
| 13 | 154372370 |
| 14 | 65619060 |
| 15 | 5098640 |
| 16 | 60725856 |
| 17 | 1841566940 |
| 18 | 10285852068 |
| 19 | 10285852068 |
| 20 | 1841566940 |
| 21 | 60725856 |
| 22 | 723344402 |
| 23 | 51632113352 |
| 24 | 683105437984 |
[256,3020,3020,35874,83520,35874,427680,2333864, 2333864,427680,5098640,65619060,154372370, 65619060,5098640,60725856,1841566940,10285852068, 10285852068,1841566940,60725856,723344402, 51632113352,683105437984] |