| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 2 |
| 4 | 24 |
| 5 | 30 |
| 6 | 9 |
| 7 | 260 |
| 8 | 492 |
| 9 | 312 |
| 10 | 76 |
| 11 | 4805 |
| 12 | 10060 |
| 13 | 9900 |
| 14 | 4900 |
| 15 | 1065 |
| 16 | 157956 |
| 17 | 284130 |
| 18 | 348420 |
| 19 | 259500 |
| 20 | 112500 |
| 21 | 22566 |
| 22 | 12277440 |
| 23 | 11892846 |
| 24 | 14768775 |
| 25 | 14093380 |
| 26 | 9063600 |
| 27 | 3592554 |
| 28 | 674611 |
| 29 | 3287166928 |
| 30 | 896150920 |
| 31 | 812261856 |
| 32 | 854806120 |
| 33 | 707722680 |
| 34 | 413149464 |
| 35 | 152565280 |
| 36 | 27019896 |
[1,4,2,24,30,9,260,492,312,76,4805,10060,9900, 4900,1065,157956,284130,348420,259500,112500, 22566,12277440,11892846,14768775,14093380,9063600, 3592554,674611,3287166928,896150920,812261856, 854806120,707722680,413149464,152565280,27019896] |