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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 10 |
| 5 | 21 |
| 6 | 33 |
| 7 | 59 |
| 8 | 89 |
| 9 | 145 |
| 10 | 212 |
| 11 | 325 |
| 12 | 463 |
| 13 | 680 |
| 14 | 948 |
| 15 | 1348 |
| 16 | 1845 |
| 17 | 2558 |
| 18 | 3446 |
| 19 | 4681 |
| 20 | 6219 |
| 21 | 8306 |
| 22 | 10901 |
| 23 | 14352 |
| 24 | 18632 |
| 25 | 24230 |
| 26 | 31151 |
| 27 | 40077 |
| 28 | 51074 |
| 29 | 65088 |
| 30 | 82290 |
| 31 | 103986 |
| 32 | 130517 |
| 33 | 163679 |
| 34 | 204078 |
| 35 | 254174 |
| 36 | 314975 |
| 37 | 389839 |
| 38 | 480369 |
| 39 | 591133 |
| 40 | 724600 |
| 41 | 886965 |
[0,1,2,6,10,21,33,59,89,145,212,325,463,680,948, 1348,1845,2558,3446,4681,6219,8306,10901,14352, 18632,24230,31151,40077,51074,65088,82290,103986, 130517,163679,204078,254174,314975,389839,480369, 591133,724600,886965] |