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| n | a(n) |
|---|---|
| 1 | 42 |
| 2 | 146 |
| 3 | 1682 |
| 4 | 6896 |
| 5 | 98296 |
| 6 | 396950 |
| 7 | 5528862 |
| 8 | 22368688 |
| 9 | 312355848 |
| 10 | 1263445694 |
| 11 | 17637095990 |
| 12 | 71342555920 |
| 13 | 995946010982 |
| 14 | 4028614953140 |
| 15 | 56239394873464 |
| 16 | 227489242462866 |
| 17 | 3175747801820816 |
| 18 | 12845949410201834 |
| 19 | 179329323720766570 |
[42,146,1682,6896,98296,396950,5528862,22368688, 312355848,1263445694,17637095990,71342555920, 995946010982,4028614953140,56239394873464, 227489242462866,3175747801820816, 12845949410201834,179329323720766570] |