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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 12 |
| 5 | 12 |
| 6 | 36 |
| 7 | 132 |
| 8 | 180 |
| 9 | 120 |
| 10 | 576 |
| 11 | 2400 |
| 12 | 4080 |
| 13 | 3360 |
| 14 | 1680 |
| 15 | 14400 |
| 16 | 65760 |
| 17 | 126000 |
| 18 | 134400 |
| 19 | 75600 |
| 20 | 30240 |
| 21 | 518400 |
| 22 | 2540160 |
| 23 | 5382720 |
| 24 | 6350400 |
| 25 | 4838400 |
| 26 | 1995840 |
| 27 | 665280 |
| 28 | 25401600 |
| 29 | 131725440 |
| 30 | 299315520 |
| 31 | 396688320 |
| 32 | 325987200 |
| 33 | 190935360 |
| 34 | 60540480 |
| 35 | 17297280 |
[1,1,2,4,12,12,36,132,180,120,576,2400,4080,3360, 1680,14400,65760,126000,134400,75600,30240,518400, 2540160,5382720,6350400,4838400,1995840,665280, 25401600,131725440,299315520,396688320,325987200, 190935360,60540480,17297280] |