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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 36 |
| 3 | 102 |
| 4 | 261 |
| 5 | 611 |
| 6 | 1278 |
| 7 | 2625 |
| 8 | 5134 |
| 9 | 9798 |
| 10 | 18414 |
| 11 | 33947 |
| 12 | 62049 |
| 13 | 112332 |
| 14 | 201925 |
| 15 | 361298 |
| 16 | 643452 |
| 17 | 1142526 |
| 18 | 2023513 |
| 19 | 3576387 |
| 20 | 6311690 |
| 21 | 11124765 |
| 22 | 19589642 |
| 23 | 34469830 |
| 24 | 60616350 |
| 25 | 106548039 |
| 26 | 187215857 |
| 27 | 328865096 |
| 28 | 577561897 |
| 29 | 1014154398 |
[6,36,102,261,611,1278,2625,5134,9798,18414,33947, 62049,112332,201925,361298,643452,1142526,2023513, 3576387,6311690,11124765,19589642,34469830, 60616350,106548039,187215857,328865096,577561897, 1014154398] |