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| n | a(n) |
|---|---|
| 1 | 172 |
| 2 | 270 |
| 3 | 468 |
| 4 | 662 |
| 5 | 1168 |
| 6 | 2372 |
| 7 | 3700 |
| 8 | 6158 |
| 9 | 11812 |
| 10 | 19350 |
| 11 | 31112 |
| 12 | 58428 |
| 13 | 98160 |
| 14 | 157340 |
| 15 | 290888 |
| 16 | 493946 |
| 17 | 796540 |
| 18 | 1451708 |
| 19 | 2482588 |
| 20 | 4029944 |
| 21 | 7257136 |
| 22 | 12470954 |
| 23 | 20367532 |
| 24 | 36325296 |
| 25 | 62623576 |
| 26 | 102859784 |
| 27 | 181987616 |
| 28 | 314402990 |
| 29 | 519129804 |
[172,270,468,662,1168,2372,3700,6158,11812,19350, 31112,58428,98160,157340,290888,493946,796540, 1451708,2482588,4029944,7257136,12470954,20367532, 36325296,62623576,102859784,181987616,314402990, 519129804] |