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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 2 |
| 5 | 5 |
| 6 | 12 |
| 7 | 21 |
| 8 | 36 |
| 9 | 54 |
| 10 | 80 |
| 11 | 110 |
| 12 | 150 |
| 13 | 195 |
| 14 | 252 |
| 15 | 315 |
| 16 | 392 |
| 17 | 476 |
| 18 | 576 |
| 19 | 684 |
| 20 | 810 |
| 21 | 945 |
| 22 | 1100 |
| 23 | 1265 |
| 24 | 1452 |
| 25 | 1650 |
| 26 | 1872 |
| 27 | 2106 |
| 28 | 2366 |
| 29 | 2639 |
| 30 | 2940 |
| 31 | 3255 |
| 32 | 3600 |
| 33 | 3960 |
| 34 | 4352 |
| 35 | 4760 |
| 36 | 5202 |
| 37 | 5661 |
| 38 | 6156 |
| 39 | 6669 |
| 40 | 7220 |
| 41 | 7790 |
| 42 | 8400 |
| 43 | 9030 |
| 44 | 9702 |
| 45 | 10395 |
| 46 | 11132 |
| 47 | 11891 |
[0,0,0,2,5,12,21,36,54,80,110,150,195,252,315,392, 476,576,684,810,945,1100,1265,1452,1650,1872,2106, 2366,2639,2940,3255,3600,3960,4352,4760,5202,5661, 6156,6669,7220,7790,8400,9030,9702,10395,11132, 11891] |