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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 4 |
| 6 | 0 |
| 7 | 0 |
| 8 | 4 |
| 9 | 4 |
| 10 | 0 |
| 11 | 0 |
| 12 | 16 |
| 13 | 72 |
| 14 | 16 |
| 15 | 0 |
| 16 | 0 |
| 17 | 64 |
| 18 | 144 |
| 19 | 144 |
| 20 | 64 |
| 21 | 0 |
| 22 | 0 |
| 23 | 196 |
| 24 | 1840 |
| 25 | 3364 |
| 26 | 1840 |
| 27 | 196 |
| 28 | 0 |
| 29 | 0 |
| 30 | 676 |
| 31 | 10404 |
| 32 | 30976 |
| 33 | 30976 |
| 34 | 10404 |
| 35 | 676 |
| 36 | 0 |
| 37 | 0 |
| 38 | 2304 |
| 39 | 69920 |
| 40 | 614656 |
| 41 | 1700580 |
| 42 | 614656 |
| 43 | 69920 |
| 44 | 2304 |
| 45 | 0 |
| 46 | 0 |
| 47 | 7744 |
| 48 | 490000 |
| 49 | 8479744 |
| 50 | 46485124 |
| 51 | 46485124 |
| 52 | 8479744 |
[0,0,0,0,4,0,0,4,4,0,0,16,72,16,0,0,64,144,144,64, 0,0,196,1840,3364,1840,196,0,0,676,10404,30976, 30976,10404,676,0,0,2304,69920,614656,1700580, 614656,69920,2304,0,0,7744,490000,8479744, 46485124,46485124,8479744] |