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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 6 |
| 3 | 9 |
| 4 | 12 |
| 5 | 19 |
| 6 | 29 |
| 7 | 40 |
| 8 | 787 |
| 9 | 1679 |
| 10 | 2137 |
| 11 | 2508 |
| 12 | 2728 |
| 13 | 5016 |
| 14 | 7524 |
| 15 | 12773 |
| 16 | 36183 |
| 17 | 46116 |
| 18 | 192952 |
| 19 | 246916 |
| 20 | 681538 |
| 21 | 1316065 |
| 22 | 4826672 |
| 23 | 7571204 |
| 24 | 8709926 |
| 25 | 9716827 |
| 26 | 24922317 |
[3,6,9,12,19,29,40,787,1679,2137,2508,2728,5016, 7524,12773,36183,46116,192952,246916,681538, 1316065,4826672,7571204,8709926,9716827,24922317] |