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| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 6 |
| 2 | 13 |
| 3 | 27 |
| 4 | 51 |
| 5 | 94 |
| 6 | 171 |
| 7 | 303 |
| 8 | 527 |
| 9 | 906 |
| 10 | 1539 |
| 11 | 2586 |
| 12 | 4308 |
| 13 | 7122 |
| 14 | 11692 |
| 15 | 19077 |
| 16 | 30957 |
| 17 | 49986 |
| 18 | 80349 |
| 19 | 128628 |
| 20 | 205146 |
| 21 | 326058 |
| 22 | 516594 |
| 23 | 816076 |
| 24 | 1285674 |
| 25 | 2020380 |
| 26 | 3167464 |
| 27 | 4954887 |
| 28 | 7734993 |
| 29 | 12051616 |
| 30 | 18743037 |
| 31 | 29099781 |
| 32 | 45106223 |
| 33 | 69810162 |
| 34 | 107887629 |
| 35 | 166505313 |
[3,6,13,27,51,94,171,303,527,906,1539,2586,4308, 7122,11692,19077,30957,49986,80349,128628,205146, 326058,516594,816076,1285674,2020380,3167464, 4954887,7734993,12051616,18743037,29099781, 45106223,69810162,107887629,166505313] |