The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 144 |
| 2 | 648 |
| 3 | 648 |
| 4 | 2952 |
| 5 | 4050 |
| 6 | 2952 |
| 7 | 13448 |
| 8 | 27378 |
| 9 | 27378 |
| 10 | 13448 |
| 11 | 61336 |
| 12 | 175232 |
| 13 | 259808 |
| 14 | 175232 |
| 15 | 61336 |
| 16 | 279752 |
| 17 | 1131008 |
| 18 | 2196608 |
| 19 | 2196608 |
| 20 | 1131008 |
| 21 | 279752 |
| 22 | 1276088 |
| 23 | 7311488 |
| 24 | 19698336 |
| 25 | 25233408 |
| 26 | 19698336 |
| 27 | 7311488 |
| 28 | 1276088 |
| 29 | 5820872 |
| 30 | 47258642 |
[144,648,648,2952,4050,2952,13448,27378,27378, 13448,61336,175232,259808,175232,61336,279752, 1131008,2196608,2196608,1131008,279752,1276088, 7311488,19698336,25233408,19698336,7311488, 1276088,5820872,47258642] |