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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 144 |
| 3 | 612 |
| 4 | 3478 |
| 5 | 18172 |
| 6 | 98126 |
| 7 | 524104 |
| 8 | 2806686 |
| 9 | 15013734 |
| 10 | 80346942 |
| 11 | 429945512 |
| 12 | 2300766930 |
| 13 | 12311872834 |
| 14 | 65883534740 |
| 15 | 352556938048 |
| 16 | 1886609290440 |
| 17 | 10095657707146 |
| 18 | 54024066478278 |
| 19 | 289094554417718 |
| 20 | 1547007980129850 |
[12,144,612,3478,18172,98126,524104,2806686, 15013734,80346942,429945512,2300766930, 12311872834,65883534740,352556938048, 1886609290440,10095657707146,54024066478278, 289094554417718,1547007980129850] |