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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 14112 |
| 3 | 0 |
| 4 | 33200832 |
| 5 | 0 |
| 6 | 31270754144 |
| 7 | 0 |
| 8 | 15800653486464 |
| 9 | 0 |
| 10 | 4977542380850592 |
| 11 | 0 |
| 12 | 1071822174138228800 |
| 13 | 0 |
| 14 | 167907946699820252640 |
| 15 | 0 |
| 16 | 20019527493762044941056 |
| 17 | 0 |
| 18 | 1879888501280846931938336 |
| 19 | 0 |
| 20 | 142817619730269235112367552 |
| 21 | 0 |
| 22 | 8970769855376398766776261728 |
| 23 | 0 |
| 24 | 474302047496125216885843184768 |
| 25 | 0 |
[1,0,14112,0,33200832,0,31270754144,0, 15800653486464,0,4977542380850592,0, 1071822174138228800,0,167907946699820252640,0, 20019527493762044941056,0, 1879888501280846931938336,0, 142817619730269235112367552,0, 8970769855376398766776261728,0, 474302047496125216885843184768,0] |