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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 4 |
| 9 | 5 |
| 10 | 6 |
| 11 | 8 |
| 12 | 10 |
| 13 | 13 |
| 14 | 16 |
| 15 | 20 |
| 16 | 24 |
| 17 | 29 |
| 18 | 35 |
| 19 | 42 |
| 20 | 50 |
| 21 | 61 |
| 22 | 72 |
| 23 | 85 |
| 24 | 101 |
| 25 | 118 |
| 26 | 138 |
| 27 | 161 |
| 28 | 188 |
| 29 | 218 |
| 30 | 254 |
| 31 | 293 |
| 32 | 339 |
| 33 | 391 |
| 34 | 450 |
| 35 | 515 |
| 36 | 591 |
| 37 | 675 |
| 38 | 771 |
| 39 | 878 |
| 40 | 999 |
| 41 | 1135 |
| 42 | 1289 |
| 43 | 1460 |
| 44 | 1652 |
| 45 | 1868 |
| 46 | 2108 |
| 47 | 2376 |
| 48 | 2676 |
| 49 | 3009 |
| 50 | 3379 |
| 51 | 3793 |
| 52 | 4250 |
| 53 | 4760 |
| 54 | 5325 |
| 55 | 5952 |
[0,0,0,1,1,1,2,3,4,5,6,8,10,13,16,20,24,29,35,42, 50,61,72,85,101,118,138,161,188,218,254,293,339, 391,450,515,591,675,771,878,999,1135,1289,1460, 1652,1868,2108,2376,2676,3009,3379,3793,4250,4760, 5325,5952] |