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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 5 |
| 4 | 11 |
| 5 | 18 |
| 6 | 30 |
| 7 | 48 |
| 8 | 85 |
| 9 | 148 |
| 10 | 250 |
| 11 | 415 |
| 12 | 669 |
| 13 | 1066 |
| 14 | 1697 |
| 15 | 2635 |
| 16 | 4036 |
| 17 | 6111 |
| 18 | 9137 |
| 19 | 13540 |
| 20 | 19930 |
| 21 | 29098 |
| 22 | 42184 |
| 23 | 60655 |
| 24 | 86598 |
| 25 | 122821 |
| 26 | 173314 |
| 27 | 243469 |
| 28 | 340329 |
| 29 | 473221 |
| 30 | 654779 |
| 31 | 901741 |
| 32 | 1236668 |
| 33 | 1689322 |
| 34 | 2298592 |
| 35 | 3115200 |
| 36 | 4206016 |
| 37 | 5658677 |
| 38 | 7588039 |
[1,1,1,5,11,18,30,48,85,148,250,415,669,1066,1697, 2635,4036,6111,9137,13540,19930,29098,42184,60655, 86598,122821,173314,243469,340329,473221,654779, 901741,1236668,1689322,2298592,3115200,4206016, 5658677,7588039] |