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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 6 |
| 5 | 6 |
| 6 | 1 |
| 7 | 28 |
| 8 | 168 |
| 9 | 168 |
| 10 | 1 |
| 11 | 120 |
| 12 | 3360 |
| 13 | 20160 |
| 14 | 20160 |
| 15 | 1 |
| 16 | 496 |
| 17 | 59520 |
| 18 | 1666560 |
| 19 | 9999360 |
| 20 | 9999360 |
| 21 | 1 |
| 22 | 2016 |
| 23 | 999936 |
| 24 | 119992320 |
| 25 | 3359784960 |
| 26 | 20158709760 |
| 27 | 20158709760 |
| 28 | 1 |
| 29 | 8128 |
| 30 | 16386048 |
| 31 | 8127479808 |
| 32 | 975297576960 |
| 33 | 27308332154880 |
| 34 | 163849992929280 |
| 35 | 163849992929280 |
[1,1,1,1,6,6,1,28,168,168,1,120,3360,20160,20160, 1,496,59520,1666560,9999360,9999360,1,2016,999936, 119992320,3359784960,20158709760,20158709760,1, 8128,16386048,8127479808,975297576960, 27308332154880,163849992929280,163849992929280] |