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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 5 |
| 7 | 11 |
| 8 | 21 |
| 9 | 39 |
| 10 | 73 |
| 11 | 129 |
| 12 | 226 |
| 13 | 388 |
| 14 | 659 |
| 15 | 1100 |
| 16 | 1821 |
| 17 | 2976 |
| 18 | 4828 |
| 19 | 7754 |
| 20 | 12370 |
| 21 | 19574 |
| 22 | 30789 |
| 23 | 48097 |
| 24 | 74725 |
| 25 | 115410 |
| 26 | 177366 |
| 27 | 271159 |
| 28 | 412665 |
| 29 | 625098 |
| 30 | 942932 |
| 31 | 1416362 |
| 32 | 2119282 |
| 33 | 3158840 |
| 34 | 4691431 |
| 35 | 6942882 |
| 36 | 10240503 |
| 37 | 15054705 |
[0,0,0,1,2,5,11,21,39,73,129,226,388,659,1100, 1821,2976,4828,7754,12370,19574,30789,48097,74725, 115410,177366,271159,412665,625098,942932,1416362, 2119282,3158840,4691431,6942882,10240503,15054705] |