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| n | a(n) |
|---|---|
| 1 | 96 |
| 2 | 380 |
| 3 | 1512 |
| 4 | 6040 |
| 5 | 24160 |
| 6 | 96736 |
| 7 | 387488 |
| 8 | 1552448 |
| 9 | 6220480 |
| 10 | 24926080 |
| 11 | 99883840 |
| 12 | 400260160 |
| 13 | 1603955712 |
| 14 | 6427525312 |
| 15 | 25757039296 |
| 16 | 103216337152 |
| 17 | 413619611968 |
| 18 | 1657501354048 |
| 19 | 6642119813120 |
| 20 | 26617026736320 |
| 21 | 106662654436544 |
[96,380,1512,6040,24160,96736,387488,1552448, 6220480,24926080,99883840,400260160,1603955712, 6427525312,25757039296,103216337152,413619611968, 1657501354048,6642119813120,26617026736320, 106662654436544] |