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| n | a(n) |
|---|---|
| 1 | 40 |
| 2 | 96 |
| 3 | 224 |
| 4 | 576 |
| 5 | 1408 |
| 6 | 3456 |
| 7 | 8320 |
| 8 | 20864 |
| 9 | 50816 |
| 10 | 125312 |
| 11 | 304768 |
| 12 | 756096 |
| 13 | 1844864 |
| 14 | 4548992 |
| 15 | 11110016 |
| 16 | 27429248 |
| 17 | 67069568 |
| 18 | 165194112 |
| 19 | 404309632 |
| 20 | 995805568 |
| 21 | 2438669952 |
| 22 | 6000273792 |
| 23 | 14703462016 |
| 24 | 36167944576 |
| 25 | 88660698752 |
| 26 | 217982249344 |
[40,96,224,576,1408,3456,8320,20864,50816,125312, 304768,756096,1844864,4548992,11110016,27429248, 67069568,165194112,404309632,995805568,2438669952, 6000273792,14703462016,36167944576,88660698752, 217982249344] |