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| n | a(n) |
|---|---|
| 1 | 48 |
| 2 | 1040 |
| 3 | 1196 |
| 4 | 2720 |
| 5 | 6080 |
| 6 | 19080 |
| 7 | 116644 |
| 8 | 252800 |
| 9 | 796172 |
| 10 | 1014800 |
| 11 | 2370352 |
| 12 | 2796800 |
| 13 | 2864000 |
| 14 | 12200288 |
| 15 | 13499120 |
| 16 | 13716716 |
| 17 | 15252992 |
| 18 | 21938672 |
| 19 | 33883520 |
| 20 | 43218800 |
| 21 | 62496048 |
| 22 | 70240000 |
| 23 | 98392832 |
| 24 | 129704960 |
| 25 | 199361792 |
| 26 | 318836720 |
| 27 | 548444160 |
| 28 | 1218624080 |
[48,1040,1196,2720,6080,19080,116644,252800, 796172,1014800,2370352,2796800,2864000,12200288, 13499120,13716716,15252992,21938672,33883520, 43218800,62496048,70240000,98392832,129704960, 199361792,318836720,548444160,1218624080] |