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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 12 |
| 3 | 27 |
| 4 | 54 |
| 5 | 99 |
| 6 | 174 |
| 7 | 297 |
| 8 | 498 |
| 9 | 825 |
| 10 | 1357 |
| 11 | 2220 |
| 12 | 3618 |
| 13 | 5882 |
| 14 | 9547 |
| 15 | 15479 |
| 16 | 25079 |
| 17 | 40614 |
| 18 | 65752 |
| 19 | 106428 |
| 20 | 172245 |
| 21 | 278741 |
| 22 | 451057 |
| 23 | 729872 |
| 24 | 1181007 |
| 25 | 1910961 |
| 26 | 3092053 |
| 27 | 5003102 |
| 28 | 8095246 |
| 29 | 13098442 |
| 30 | 21193785 |
| 31 | 34292327 |
| 32 | 55486215 |
| 33 | 89778648 |
| 34 | 145264972 |
| 35 | 235043732 |
[1,3,12,27,54,99,174,297,498,825,1357,2220,3618, 5882,9547,15479,25079,40614,65752,106428,172245, 278741,451057,729872,1181007,1910961,3092053, 5003102,8095246,13098442,21193785,34292327, 55486215,89778648,145264972,235043732] |