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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 1 |
| 12 | 2 |
| 13 | 3 |
| 14 | 6 |
| 15 | 9 |
| 16 | 15 |
| 17 | 22 |
| 18 | 35 |
| 19 | 50 |
| 20 | 75 |
| 21 | 103 |
| 22 | 149 |
| 23 | 202 |
| 24 | 281 |
| 25 | 376 |
| 26 | 510 |
| 27 | 669 |
| 28 | 889 |
| 29 | 1149 |
| 30 | 1499 |
| 31 | 1913 |
| 32 | 2453 |
| 33 | 3093 |
| 34 | 3917 |
| 35 | 4886 |
| 36 | 6106 |
| 37 | 7544 |
| 38 | 9330 |
| 39 | 11419 |
| 40 | 13989 |
| 41 | 16979 |
| 42 | 20614 |
| 43 | 24837 |
| 44 | 29912 |
| 45 | 35785 |
| 46 | 42790 |
| 47 | 50857 |
| 48 | 60399 |
| 49 | 71360 |
| 50 | 84233 |
| 51 | 98952 |
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