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| n | a(n) |
|---|---|
| 4 | 35 |
| 5 | 336 |
| 6 | 1764 |
| 7 | 6720 |
| 8 | 20790 |
| 9 | 55440 |
| 10 | 132132 |
| 11 | 288288 |
| 12 | 585585 |
| 13 | 1121120 |
| 14 | 2042040 |
| 15 | 3564288 |
| 16 | 5996172 |
| 17 | 9767520 |
| 18 | 15465240 |
| 19 | 23876160 |
| 20 | 36038079 |
| 21 | 53300016 |
| 22 | 77392700 |
| 23 | 110510400 |
| 24 | 155405250 |
| 25 | 215495280 |
| 26 | 294987420 |
| 27 | 399016800 |
| 28 | 533803725 |
| 29 | 706829760 |
| 30 | 927034416 |
| 31 | 1205033984 |
| 32 | 1553364120 |
[35,336,1764,6720,20790,55440,132132,288288, 585585,1121120,2042040,3564288,5996172,9767520, 15465240,23876160,36038079,53300016,77392700, 110510400,155405250,215495280,294987420,399016800, 533803725,706829760,927034416,1205033984, 1553364120] |