The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 6 |
| 4 | 9 |
| 5 | 6 |
| 6 | 90 |
| 7 | 180 |
| 8 | 180 |
| 9 | 90 |
| 10 | 2520 |
| 11 | 6300 |
| 12 | 8100 |
| 13 | 6300 |
| 14 | 2520 |
| 15 | 113400 |
| 16 | 340200 |
| 17 | 529200 |
| 18 | 529200 |
| 19 | 340200 |
| 20 | 113400 |
| 21 | 7484400 |
| 22 | 26195400 |
| 23 | 47628000 |
| 24 | 57153600 |
| 25 | 47628000 |
| 26 | 26195400 |
| 27 | 7484400 |
| 28 | 681080400 |
| 29 | 2724321600 |
| 30 | 5658206400 |
| 31 | 7858620000 |
| 32 | 7858620000 |
| 33 | 5658206400 |
| 34 | 2724321600 |
| 35 | 681080400 |
[1,1,1,6,9,6,90,180,180,90,2520,6300,8100,6300, 2520,113400,340200,529200,529200,340200,113400, 7484400,26195400,47628000,57153600,47628000, 26195400,7484400,681080400,2724321600,5658206400, 7858620000,7858620000,5658206400,2724321600, 681080400] |