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| n | a(n) |
|---|---|
| 7 | 0 |
| 8 | 8 |
| 9 | 36 |
| 10 | 120 |
| 11 | 330 |
| 12 | 792 |
| 13 | 1716 |
| 14 | 3430 |
| 15 | 6435 |
| 16 | 11440 |
| 17 | 19448 |
| 18 | 31824 |
| 19 | 50388 |
| 20 | 77520 |
| 21 | 116277 |
| 22 | 170544 |
| 23 | 245157 |
| 24 | 346104 |
| 25 | 480700 |
| 26 | 657800 |
| 27 | 888030 |
| 28 | 1184036 |
| 29 | 1560780 |
| 30 | 2035800 |
| 31 | 2629575 |
| 32 | 3365856 |
| 33 | 4272048 |
| 34 | 5379616 |
| 35 | 6724515 |
| 36 | 8347680 |
| 37 | 10295472 |
[0,8,36,120,330,792,1716,3430,6435,11440,19448, 31824,50388,77520,116277,170544,245157,346104, 480700,657800,888030,1184036,1560780,2035800, 2629575,3365856,4272048,5379616,6724515,8347680, 10295472] |