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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 4232 |
| 3 | 0 |
| 4 | 2987792 |
| 5 | 0 |
| 6 | 846141848 |
| 7 | 0 |
| 8 | 128975126048 |
| 9 | 0 |
| 10 | 12312430500520 |
| 11 | 0 |
| 12 | 808072815510832 |
| 13 | 0 |
| 14 | 38851092934042552 |
| 15 | 0 |
| 16 | 1433080081936088128 |
| 17 | 0 |
| 18 | 42010353222033261768 |
| 19 | 0 |
| 20 | 1006338265202317013840 |
| 21 | 0 |
| 22 | 20147944043360020434392 |
| 23 | 35184372088832 |
| 24 | 343501353331500571867744 |
| 25 | 38034306228027392 |
[1,0,4232,0,2987792,0,846141848,0,128975126048,0, 12312430500520,0,808072815510832,0, 38851092934042552,0,1433080081936088128,0, 42010353222033261768,0,1006338265202317013840,0, 20147944043360020434392,35184372088832, 343501353331500571867744,38034306228027392] |