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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 12 |
| 2 | 504 |
| 3 | 45360 |
| 4 | 7076160 |
| 5 | 1698278400 |
| 6 | 580811212800 |
| 7 | 268334780313600 |
| 8 | 161000868188160000 |
| 9 | 121716656350248960000 |
| 10 | 113196490405731532800000 |
| 11 | 127006462235230779801600000 |
| 12 | 169172607697327398695731200000 |
| 13 | 263909268007830741965340672000000 |
| 14 | 476620138022142319989405253632000000 |
[1,12,504,45360,7076160,1698278400,580811212800, 268334780313600,161000868188160000, 121716656350248960000,113196490405731532800000, 127006462235230779801600000, 169172607697327398695731200000, 263909268007830741965340672000000, 476620138022142319989405253632000000] |