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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 3 |
| 4 | 8 |
| 5 | 25 |
| 6 | 42 |
| 7 | 91 |
| 8 | 144 |
| 9 | 243 |
| 10 | 380 |
| 11 | 594 |
| 12 | 852 |
| 13 | 1287 |
| 14 | 1834 |
| 15 | 2580 |
| 16 | 3616 |
| 17 | 5015 |
| 18 | 6822 |
| 19 | 9272 |
| 20 | 12420 |
| 21 | 16548 |
| 22 | 21956 |
| 23 | 28819 |
| 24 | 37608 |
| 25 | 48875 |
| 26 | 63232 |
| 27 | 81162 |
| 28 | 103936 |
| 29 | 132327 |
| 30 | 167880 |
| 31 | 212040 |
| 32 | 266976 |
| 33 | 334587 |
| 34 | 418404 |
| 35 | 520765 |
| 36 | 646848 |
| 37 | 800495 |
| 38 | 988418 |
| 39 | 1216059 |
| 40 | 1493200 |
[0,0,3,8,25,42,91,144,243,380,594,852,1287,1834, 2580,3616,5015,6822,9272,12420,16548,21956,28819, 37608,48875,63232,81162,103936,132327,167880, 212040,266976,334587,418404,520765,646848,800495, 988418,1216059,1493200] |