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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 6 |
| 4 | 18 |
| 5 | 31 |
| 6 | 57 |
| 7 | 80 |
| 8 | 125 |
| 9 | 161 |
| 10 | 230 |
| 11 | 282 |
| 12 | 380 |
| 13 | 451 |
| 14 | 583 |
| 15 | 676 |
| 16 | 847 |
| 17 | 965 |
| 18 | 1180 |
| 19 | 1326 |
| 20 | 1590 |
| 21 | 1767 |
| 22 | 2085 |
| 23 | 2296 |
| 24 | 2673 |
| 25 | 2921 |
| 26 | 3362 |
| 27 | 3650 |
| 28 | 4160 |
| 29 | 4491 |
| 30 | 5075 |
| 31 | 5452 |
| 32 | 6115 |
| 33 | 6541 |
| 34 | 7288 |
| 35 | 7766 |
| 36 | 8602 |
| 37 | 9135 |
| 38 | 10065 |
| 39 | 10656 |
| 40 | 11685 |
| 41 | 12337 |
| 42 | 13470 |
| 43 | 14186 |
| 44 | 15428 |
| 45 | 16211 |
| 46 | 17567 |
| 47 | 18420 |
| 48 | 19895 |
| 49 | 20821 |
[0,0,0,6,18,31,57,80,125,161,230,282,380,451,583, 676,847,965,1180,1326,1590,1767,2085,2296,2673, 2921,3362,3650,4160,4491,5075,5452,6115,6541,7288, 7766,8602,9135,10065,10656,11685,12337,13470, 14186,15428,16211,17567,18420,19895,20821] |