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| n | a(n) |
|---|---|
| 1 | 48 |
| 2 | 2592 |
| 3 | 3552 |
| 4 | 23712 |
| 5 | 138600 |
| 6 | 867456 |
| 7 | 5360184 |
| 8 | 33275880 |
| 9 | 206892990 |
| 10 | 1286374716 |
| 11 | 7998368250 |
| 12 | 49754459556 |
| 13 | 309431155980 |
| 14 | 1924683955344 |
| 15 | 11971565665080 |
| 16 | 74462297454048 |
| 17 | 463161757751784 |
| 18 | 2880875453047152 |
| 19 | 17919172630925406 |
[48,2592,3552,23712,138600,867456,5360184, 33275880,206892990,1286374716,7998368250, 49754459556,309431155980,1924683955344, 11971565665080,74462297454048,463161757751784, 2880875453047152,17919172630925406] |