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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 18 |
| 3 | 1 |
| 4 | 630 |
| 5 | 54 |
| 6 | 1 |
| 7 | 32760 |
| 8 | 3492 |
| 9 | 108 |
| 10 | 1 |
| 11 | 2260440 |
| 12 | 277200 |
| 13 | 11160 |
| 14 | 180 |
| 15 | 1 |
| 16 | 194397840 |
| 17 | 26376840 |
| 18 | 1259280 |
| 19 | 27180 |
| 20 | 270 |
| 21 | 1 |
| 22 | 20022977520 |
| 23 | 2937589200 |
| 24 | 158601240 |
| 25 | 4140360 |
| 26 | 56070 |
| 27 | 378 |
| 28 | 1 |
| 29 | 2402757302400 |
| 30 | 375471270720 |
| 31 | 22286940480 |
| 32 | 667865520 |
| 33 | 11093040 |
| 34 | 103320 |
| 35 | 504 |
| 36 | 1 |
[1,18,1,630,54,1,32760,3492,108,1,2260440,277200, 11160,180,1,194397840,26376840,1259280,27180,270, 1,20022977520,2937589200,158601240,4140360,56070, 378,1,2402757302400,375471270720,22286940480, 667865520,11093040,103320,504,1] |