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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 6 |
| 7 | 9 |
| 8 | 12 |
| 9 | 16 |
| 10 | 20 |
| 11 | 25 |
| 12 | 30 |
| 13 | 36 |
| 14 | 43 |
| 15 | 51 |
| 16 | 61 |
| 17 | 74 |
| 18 | 91 |
| 19 | 113 |
| 20 | 144 |
| 21 | 184 |
| 22 | 239 |
| 23 | 311 |
| 24 | 407 |
| 25 | 530 |
| 26 | 692 |
| 27 | 895 |
| 28 | 1155 |
| 29 | 1478 |
| 30 | 1882 |
| 31 | 2375 |
| 32 | 2983 |
| 33 | 3715 |
| 34 | 4602 |
| 35 | 5660 |
| 36 | 6925 |
| 37 | 8418 |
| 38 | 10187 |
| 39 | 12257 |
| 40 | 14686 |
| 41 | 17514 |
| 42 | 20809 |
| 43 | 24624 |
| 44 | 29049 |
| 45 | 34154 |
| 46 | 40051 |
| 47 | 46842 |
| 48 | 54668 |
| 49 | 63667 |
[0,0,0,1,2,4,6,9,12,16,20,25,30,36,43,51,61,74,91, 113,144,184,239,311,407,530,692,895,1155,1478, 1882,2375,2983,3715,4602,5660,6925,8418,10187, 12257,14686,17514,20809,24624,29049,34154,40051, 46842,54668,63667] |