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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 9 |
| 6 | 0 |
| 7 | 4 |
| 8 | 50 |
| 9 | 64 |
| 10 | 0 |
| 11 | 8 |
| 12 | 484 |
| 13 | 1056 |
| 14 | 441 |
| 15 | 0 |
| 16 | 16 |
| 17 | 3864 |
| 18 | 45369 |
| 19 | 21660 |
| 20 | 3025 |
| 21 | 0 |
| 22 | 32 |
| 23 | 32400 |
| 24 | 1337130 |
| 25 | 4096576 |
| 26 | 441720 |
| 27 | 20736 |
| 28 | 0 |
| 29 | 64 |
| 30 | 267264 |
| 31 | 44315649 |
| 32 | 438377904 |
| 33 | 367565584 |
| 34 | 8997120 |
| 35 | 142129 |
| 36 | 0 |
| 37 | 128 |
| 38 | 2214144 |
| 39 | 1404725868 |
| 40 | 56606878084 |
[0,1,0,2,9,0,4,50,64,0,8,484,1056,441,0,16,3864, 45369,21660,3025,0,32,32400,1337130,4096576, 441720,20736,0,64,267264,44315649,438377904, 367565584,8997120,142129,0,128,2214144,1404725868, 56606878084] |