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| n | a(n) |
|---|---|
| 7 | 1 |
| 8 | 196 |
| 9 | 8526 |
| 10 | 217560 |
| 11 | 4635939 |
| 12 | 67454772 |
| 13 | 877414538 |
| 14 | 10742461730 |
| 15 | 113528563148 |
| 16 | 1132899916148 |
| 17 | 10494458555126 |
| 18 | 96114856972680 |
| 19 | 831333224017303 |
| 20 | 7005224782844764 |
| 21 | 56197005110455286 |
| 22 | 453234116137501160 |
| 23 | 3555422918860518398 |
| 24 | 27541742188014185824 |
[1,196,8526,217560,4635939,67454772,877414538, 10742461730,113528563148,1132899916148, 10494458555126,96114856972680,831333224017303, 7005224782844764,56197005110455286, 453234116137501160,3555422918860518398, 27541742188014185824] |