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| n | a(n) |
|---|---|
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 7 |
| 8 | 16 |
| 9 | 84 |
| 10 | 180 |
| 11 | 462 |
| 12 | 796 |
| 13 | 1716 |
| 14 | 2856 |
| 15 | 5005 |
| 16 | 7744 |
| 17 | 12376 |
| 18 | 17508 |
| 19 | 27132 |
| 20 | 38160 |
| 21 | 54264 |
| 22 | 73788 |
| 23 | 100947 |
| 24 | 132216 |
| 25 | 177100 |
| 26 | 228748 |
| 27 | 296010 |
| 28 | 374808 |
| 29 | 475020 |
| 30 | 584140 |
| 31 | 736281 |
| 32 | 903168 |
| 33 | 1107568 |
| 34 | 1341232 |
| 35 | 1623160 |
| 36 | 1939308 |
| 37 | 2324784 |
| 38 | 2755380 |
| 39 | 3262623 |
| 40 | 3832080 |
| 41 | 4496388 |
[0,0,0,0,7,16,84,180,462,796,1716,2856,5005,7744, 12376,17508,27132,38160,54264,73788,100947,132216, 177100,228748,296010,374808,475020,584140,736281, 903168,1107568,1341232,1623160,1939308,2324784, 2755380,3262623,3832080,4496388] |