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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 6 |
| 7 | 9 |
| 8 | 30 |
| 9 | 36 |
| 10 | 24 |
| 11 | 39 |
| 12 | 150 |
| 13 | 270 |
| 14 | 240 |
| 15 | 120 |
| 16 | 189 |
| 17 | 918 |
| 18 | 1980 |
| 19 | 2520 |
| 20 | 1800 |
| 21 | 720 |
| 22 | 1107 |
| 23 | 6174 |
| 24 | 16254 |
| 25 | 25200 |
| 26 | 25200 |
| 27 | 15120 |
| 28 | 5040 |
| 29 | 7281 |
| 30 | 47070 |
| 31 | 142884 |
| 32 | 266616 |
| 33 | 327600 |
| 34 | 272160 |
| 35 | 141120 |
| 36 | 40320 |
| 37 | 54351 |
| 38 | 394470 |
| 39 | 1369710 |
| 40 | 2948400 |
| 41 | 4331880 |
[1,1,2,3,6,6,9,30,36,24,39,150,270,240,120,189, 918,1980,2520,1800,720,1107,6174,16254,25200, 25200,15120,5040,7281,47070,142884,266616,327600, 272160,141120,40320,54351,394470,1369710,2948400, 4331880] |