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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 21 |
| 11 | 28 |
| 12 | 36 |
| 13 | 144 |
| 14 | 180 |
| 15 | 220 |
| 16 | 550 |
| 17 | 660 |
| 18 | 780 |
| 19 | 2275 |
| 20 | 2821 |
| 21 | 3465 |
| 22 | 13230 |
| 23 | 16940 |
| 24 | 21420 |
| 25 | 74256 |
| 26 | 94248 |
| 27 | 118104 |
| 28 | 367080 |
| 29 | 461700 |
| 30 | 574644 |
| 31 | 1824690 |
| 32 | 2310000 |
| 33 | 2899380 |
| 34 | 9684840 |
| 35 | 12357532 |
| 36 | 15634300 |
| 37 | 51798175 |
| 38 | 66098175 |
[0,0,0,0,0,0,0,0,0,21,28,36,144,180,220,550,660, 780,2275,2821,3465,13230,16940,21420,74256,94248, 118104,367080,461700,574644,1824690,2310000, 2899380,9684840,12357532,15634300,51798175, 66098175] |