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| n | a(n) |
|---|---|
| 4 | 160 |
| 5 | 1750 |
| 6 | 10044 |
| 7 | 40817 |
| 8 | 132608 |
| 9 | 367416 |
| 10 | 903000 |
| 11 | 2020458 |
| 12 | 4191264 |
| 13 | 8168446 |
| 14 | 15107092 |
| 15 | 26719875 |
| 16 | 45473792 |
| 17 | 74834816 |
| 18 | 119567664 |
| 19 | 186098388 |
| 20 | 282948000 |
| 21 | 421245846 |
| 22 | 615331948 |
| 23 | 883458037 |
| 24 | 1248597504 |
| 25 | 1739375000 |
| 26 | 2391126920 |
[160,1750,10044,40817,132608,367416,903000, 2020458,4191264,8168446,15107092,26719875, 45473792,74834816,119567664,186098388,282948000, 421245846,615331948,883458037,1248597504, 1739375000,2391126920] |