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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 6 |
| 3 | 14 |
| 4 | 36 |
| 5 | 83 |
| 6 | 192 |
| 7 | 468 |
| 8 | 1112 |
| 9 | 2624 |
| 10 | 6267 |
| 11 | 14941 |
| 12 | 35493 |
| 13 | 84487 |
| 14 | 201229 |
| 15 | 478826 |
| 16 | 1139543 |
| 17 | 2712764 |
| 18 | 6456865 |
| 19 | 15367802 |
| 20 | 36579318 |
| 21 | 87067091 |
| 22 | 207234557 |
| 23 | 493260338 |
| 24 | 1174064036 |
| 25 | 2794503372 |
| 26 | 6651474771 |
| 27 | 15831865426 |
| 28 | 37683024434 |
| 29 | 89693152856 |
[3,6,14,36,83,192,468,1112,2624,6267,14941,35493, 84487,201229,478826,1139543,2712764,6456865, 15367802,36579318,87067091,207234557,493260338, 1174064036,2794503372,6651474771,15831865426, 37683024434,89693152856] |