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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 16 |
| 6 | 29 |
| 7 | 53 |
| 8 | 96 |
| 9 | 174 |
| 10 | 315 |
| 11 | 571 |
| 12 | 1035 |
| 13 | 1876 |
| 14 | 3400 |
| 15 | 6162 |
| 16 | 11168 |
| 17 | 20241 |
| 18 | 36685 |
| 19 | 66488 |
| 20 | 120503 |
| 21 | 218400 |
| 22 | 395829 |
| 23 | 717402 |
| 24 | 1300222 |
| 25 | 2356527 |
| 26 | 4270978 |
| 27 | 7740736 |
| 28 | 14029338 |
| 29 | 25426823 |
| 30 | 46083666 |
| 31 | 83522203 |
| 32 | 151375943 |
| 33 | 274354307 |
| 34 | 497240739 |
| 35 | 901200915 |
| 36 | 1633339800 |
| 37 | 2960270965 |
| 38 | 5365205811 |
[1,1,3,5,9,16,29,53,96,174,315,571,1035,1876,3400, 6162,11168,20241,36685,66488,120503,218400,395829, 717402,1300222,2356527,4270978,7740736,14029338, 25426823,46083666,83522203,151375943,274354307, 497240739,901200915,1633339800,2960270965, 5365205811] |