The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 480 |
| 3 | 480 |
| 4 | 2890 |
| 5 | 2192 |
| 6 | 2890 |
| 7 | 17560 |
| 8 | 8168 |
| 9 | 8168 |
| 10 | 17560 |
| 11 | 106540 |
| 12 | 37828 |
| 13 | 27362 |
| 14 | 37828 |
| 15 | 106540 |
| 16 | 646240 |
| 17 | 158472 |
| 18 | 108950 |
| 19 | 108950 |
| 20 | 158472 |
| 21 | 646240 |
| 22 | 3920448 |
| 23 | 638602 |
| 24 | 367348 |
| 25 | 403698 |
| 26 | 367348 |
| 27 | 638602 |
| 28 | 3920448 |
| 29 | 23781448 |
| 30 | 2763096 |
| 31 | 1489310 |
| 32 | 1739014 |
[81,480,480,2890,2192,2890,17560,8168,8168,17560, 106540,37828,27362,37828,106540,646240,158472, 108950,108950,158472,646240,3920448,638602,367348, 403698,367348,638602,3920448,23781448,2763096, 1489310,1739014] |