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| n | a(n) |
|---|---|
| 1 | 84 |
| 2 | 218 |
| 3 | 482 |
| 4 | 1036 |
| 5 | 2134 |
| 6 | 4382 |
| 7 | 8810 |
| 8 | 17818 |
| 9 | 35538 |
| 10 | 71522 |
| 11 | 142458 |
| 12 | 286522 |
| 13 | 571602 |
| 14 | 1151174 |
| 15 | 2303198 |
| 16 | 4648814 |
| 17 | 9332754 |
| 18 | 18885906 |
| 19 | 38047946 |
| 20 | 77198226 |
| 21 | 156057706 |
| 22 | 317451158 |
| 23 | 643803786 |
| 24 | 1312796154 |
| 25 | 2670343286 |
| 26 | 5457409302 |
| 27 | 11131101682 |
[84,218,482,1036,2134,4382,8810,17818,35538,71522, 142458,286522,571602,1151174,2303198,4648814, 9332754,18885906,38047946,77198226,156057706, 317451158,643803786,1312796154,2670343286, 5457409302,11131101682] |