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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 12 |
| 6 | 21 |
| 7 | 38 |
| 8 | 68 |
| 9 | 122 |
| 10 | 220 |
| 11 | 399 |
| 12 | 729 |
| 13 | 1343 |
| 14 | 2493 |
| 15 | 4655 |
| 16 | 8727 |
| 17 | 16405 |
| 18 | 30901 |
| 19 | 58319 |
| 20 | 110298 |
| 21 | 209098 |
| 22 | 397407 |
| 23 | 757296 |
| 24 | 1446945 |
| 25 | 2771951 |
| 26 | 5323982 |
| 27 | 10250571 |
| 28 | 19780122 |
| 29 | 38243220 |
| 30 | 74058513 |
| 31 | 143592684 |
| 32 | 278661808 |
| 33 | 541110611 |
| 34 | 1051158027 |
| 35 | 2042539460 |
| 36 | 3969857205 |
[0,1,2,4,7,12,21,38,68,122,220,399,729,1343,2493, 4655,8727,16405,30901,58319,110298,209098,397407, 757296,1446945,2771951,5323982,10250571,19780122, 38243220,74058513,143592684,278661808,541110611, 1051158027,2042539460,3969857205] |