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| n | a(n) |
|---|---|
| 1 | 2943 |
| 2 | 12412 |
| 3 | 39209 |
| 4 | 74850 |
| 5 | 190794 |
| 6 | 760397 |
| 7 | 1890678 |
| 8 | 4225837 |
| 9 | 14524157 |
| 10 | 43967830 |
| 11 | 103951737 |
| 12 | 307376712 |
| 13 | 941159102 |
| 14 | 2487744836 |
| 15 | 6988910173 |
| 16 | 20479305105 |
| 17 | 56255148598 |
| 18 | 160885870714 |
| 19 | 459145692332 |
| 20 | 1263501205388 |
| 21 | 3634292347687 |
[2943,12412,39209,74850,190794,760397,1890678, 4225837,14524157,43967830,103951737,307376712, 941159102,2487744836,6988910173,20479305105, 56255148598,160885870714,459145692332, 1263501205388,3634292347687] |