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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 4 |
| 3 | 6 |
| 4 | 13 |
| 5 | 21 |
| 6 | 41 |
| 7 | 71 |
| 8 | 130 |
| 9 | 237 |
| 10 | 439 |
| 11 | 802 |
| 12 | 1483 |
| 13 | 2734 |
| 14 | 5067 |
| 15 | 9351 |
| 16 | 17309 |
| 17 | 32017 |
| 18 | 59290 |
| 19 | 109700 |
| 20 | 203097 |
| 21 | 375959 |
| 22 | 696116 |
| 23 | 1288668 |
| 24 | 2385953 |
| 25 | 4417419 |
| 26 | 8178970 |
| 27 | 15142943 |
| 28 | 28037280 |
| 29 | 51910866 |
| 30 | 96113811 |
| 31 | 177954611 |
| 32 | 329485125 |
| 33 | 610044725 |
| 34 | 1129506327 |
[3,4,6,13,21,41,71,130,237,439,802,1483,2734,5067, 9351,17309,32017,59290,109700,203097,375959, 696116,1288668,2385953,4417419,8178970,15142943, 28037280,51910866,96113811,177954611,329485125, 610044725,1129506327] |