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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 2 |
| 6 | 4 |
| 7 | 4 |
| 8 | 7 |
| 9 | 10 |
| 10 | 16 |
| 11 | 27 |
| 12 | 45 |
| 13 | 79 |
| 14 | 139 |
| 15 | 249 |
| 16 | 439 |
| 17 | 784 |
| 18 | 1419 |
| 19 | 2574 |
| 20 | 4703 |
| 21 | 8682 |
| 22 | 16021 |
| 23 | 29720 |
| 24 | 55146 |
| 25 | 102170 |
| 26 | 190274 |
| 27 | 356804 |
| 28 | 671224 |
| 29 | 1269022 |
| 30 | 2404289 |
| 31 | 4521836 |
| 32 | 8535117 |
| 33 | 16134474 |
| 34 | 30635869 |
| 35 | 58062404 |
| 36 | 110496946 |
| 37 | 210500898 |
| 38 | 401422210 |
| 39 | 767158570 |
| 40 | 1467402238 |
[1,1,1,2,2,2,4,4,7,10,16,27,45,79,139,249,439,784, 1419,2574,4703,8682,16021,29720,55146,102170, 190274,356804,671224,1269022,2404289,4521836, 8535117,16134474,30635869,58062404,110496946, 210500898,401422210,767158570,1467402238] |