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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 48 |
| 3 | 8 |
| 4 | 400 |
| 5 | 104 |
| 6 | 1568 |
| 7 | 456 |
| 8 | 6216 |
| 9 | 1848 |
| 10 | 13944 |
| 11 | 4256 |
| 12 | 38760 |
| 13 | 11976 |
| 14 | 75768 |
| 15 | 23480 |
| 16 | 154440 |
| 17 | 48248 |
| 18 | 261072 |
| 19 | 82184 |
| 20 | 500464 |
| 21 | 157440 |
| 22 | 747480 |
| 23 | 235528 |
| 24 | 1298584 |
| 25 | 410088 |
| 26 | 1890184 |
| 27 | 595784 |
| 28 | 2853416 |
| 29 | 901768 |
| 30 | 4015552 |
| 31 | 1274392 |
| 32 | 6127632 |
| 33 | 1942104 |
| 34 | 8002552 |
| 35 | 2537240 |
| 36 | 11683880 |
| 37 | 3703440 |
| 38 | 15123800 |
| 39 | 4790040 |
[4,48,8,400,104,1568,456,6216,1848,13944,4256, 38760,11976,75768,23480,154440,48248,261072,82184, 500464,157440,747480,235528,1298584,410088, 1890184,595784,2853416,901768,4015552,1274392, 6127632,1942104,8002552,2537240,11683880,3703440, 15123800,4790040] |