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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 12 |
| 3 | 56 |
| 4 | 120 |
| 5 | 528 |
| 6 | 672 |
| 7 | 992 |
| 8 | 1456 |
| 9 | 2160 |
| 10 | 2208 |
| 11 | 6720 |
| 12 | 9024 |
| 13 | 9120 |
| 14 | 11904 |
| 15 | 13104 |
| 16 | 16256 |
| 17 | 17472 |
| 18 | 24800 |
| 19 | 29568 |
| 20 | 55104 |
| 21 | 55552 |
| 22 | 73440 |
| 23 | 90816 |
| 24 | 95040 |
| 25 | 119040 |
| 26 | 120960 |
| 27 | 121024 |
| 28 | 123648 |
| 29 | 131040 |
| 30 | 146688 |
| 31 | 151680 |
| 32 | 174720 |
| 33 | 195072 |
| 34 | 223104 |
| 35 | 297600 |
| 36 | 397440 |
| 37 | 399616 |
| 38 | 445536 |
| 39 | 505344 |
[4,12,56,120,528,672,992,1456,2160,2208,6720,9024, 9120,11904,13104,16256,17472,24800,29568,55104, 55552,73440,90816,95040,119040,120960,121024, 123648,131040,146688,151680,174720,195072,223104, 297600,397440,399616,445536,505344] |