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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 124 |
| 3 | 42 |
| 4 | 996 |
| 5 | 606 |
| 6 | 8104 |
| 7 | 7568 |
| 8 | 66744 |
| 9 | 82132 |
| 10 | 556612 |
| 11 | 836046 |
| 12 | 4691760 |
| 13 | 8187072 |
| 14 | 39925804 |
| 15 | 78178630 |
| 16 | 342580066 |
| 17 | 733698936 |
| 18 | 2960354254 |
| 19 | 6801151306 |
| 20 | 25734466516 |
| 21 | 62477896160 |
| 22 | 224824244852 |
| 23 | 570101087316 |
| 24 | 1972190659984 |
| 25 | 5175766221764 |
[4,124,42,996,606,8104,7568,66744,82132,556612, 836046,4691760,8187072,39925804,78178630, 342580066,733698936,2960354254,6801151306, 25734466516,62477896160,224824244852,570101087316, 1972190659984,5175766221764] |