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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 1 |
| 10 | 1 |
| 11 | 2 |
| 12 | 3 |
| 13 | 5 |
| 14 | 7 |
| 15 | 11 |
| 16 | 15 |
| 17 | 22 |
| 18 | 31 |
| 19 | 43 |
| 20 | 58 |
| 21 | 80 |
| 22 | 106 |
| 23 | 142 |
| 24 | 187 |
| 25 | 246 |
| 26 | 319 |
| 27 | 416 |
| 28 | 533 |
| 29 | 685 |
| 30 | 872 |
| 31 | 1108 |
| 32 | 1397 |
| 33 | 1762 |
| 34 | 2204 |
| 35 | 2755 |
| 36 | 3426 |
| 37 | 4251 |
| 38 | 5250 |
| 39 | 6476 |
| 40 | 7950 |
| 41 | 9746 |
| 42 | 11905 |
| 43 | 14514 |
| 44 | 17638 |
| 45 | 21403 |
| 46 | 25888 |
| 47 | 31265 |
| 48 | 37661 |
| 49 | 45288 |
| 50 | 54329 |
| 51 | 65079 |
| 52 | 77775 |
[0,0,0,0,0,0,0,0,1,1,2,3,5,7,11,15,22,31,43,58,80, 106,142,187,246,319,416,533,685,872,1108,1397, 1762,2204,2755,3426,4251,5250,6476,7950,9746, 11905,14514,17638,21403,25888,31265,37661,45288, 54329,65079,77775] |