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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 7 |
| 4 | 12 |
| 5 | 6 |
| 6 | 90 |
| 7 | 195 |
| 8 | 180 |
| 9 | 60 |
| 10 | 1701 |
| 11 | 4200 |
| 12 | 5320 |
| 13 | 3360 |
| 14 | 840 |
| 15 | 42525 |
| 16 | 114135 |
| 17 | 176400 |
| 18 | 157500 |
| 19 | 75600 |
| 20 | 15120 |
| 21 | 1323652 |
| 22 | 3764376 |
| 23 | 6679134 |
| 24 | 7484400 |
| 25 | 5155920 |
| 26 | 1995840 |
| 27 | 332640 |
| 28 | 49329280 |
| 29 | 146386240 |
| 30 | 287567280 |
| 31 | 379387008 |
| 32 | 332972640 |
| 33 | 186666480 |
| 34 | 60540480 |
| 35 | 8648640 |
[1,1,1,7,12,6,90,195,180,60,1701,4200,5320,3360, 840,42525,114135,176400,157500,75600,15120, 1323652,3764376,6679134,7484400,5155920,1995840, 332640,49329280,146386240,287567280,379387008, 332972640,186666480,60540480,8648640] |