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| n | a(n) |
|---|---|
| 3 | 6 |
| 4 | 152 |
| 5 | 940 |
| 6 | 3600 |
| 7 | 10570 |
| 8 | 26096 |
| 9 | 56952 |
| 10 | 113280 |
| 11 | 209550 |
| 12 | 365640 |
| 13 | 608036 |
| 14 | 971152 |
| 15 | 1498770 |
| 16 | 2245600 |
| 17 | 3278960 |
| 18 | 4680576 |
| 19 | 6548502 |
| 20 | 8999160 |
| 21 | 12169500 |
| 22 | 16219280 |
| 23 | 21333466 |
| 24 | 27724752 |
| 25 | 35636200 |
| 26 | 45344000 |
| 27 | 57160350 |
| 28 | 71436456 |
| 29 | 88565652 |
| 30 | 108986640 |
| 31 | 133186850 |
| 32 | 161705920 |
[6,152,940,3600,10570,26096,56952,113280,209550, 365640,608036,971152,1498770,2245600,3278960, 4680576,6548502,8999160,12169500,16219280, 21333466,27724752,35636200,45344000,57160350, 71436456,88565652,108986640,133186850,161705920] |