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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 28 |
| 3 | 150 |
| 4 | 496 |
| 5 | 528 |
| 6 | 1980 |
| 7 | 4560 |
| 8 | 8128 |
| 9 | 8736 |
| 10 | 11400 |
| 11 | 19872 |
| 12 | 20664 |
| 13 | 75840 |
| 14 | 82080 |
| 15 | 253080 |
| 16 | 254880 |
| 17 | 741744 |
| 18 | 1627290 |
| 19 | 5130300 |
| 20 | 5607360 |
| 21 | 7529760 |
| 22 | 19645440 |
| 23 | 20718720 |
| 24 | 33550336 |
| 25 | 35092512 |
| 26 | 45643392 |
| 27 | 45995040 |
| 28 | 56424960 |
| 29 | 86944320 |
| 30 | 169910136 |
| 31 | 174013920 |
| 32 | 180442080 |
| 33 | 196378992 |
| 34 | 242040960 |
| 35 | 304577280 |
| 36 | 314511360 |
| 37 | 326611440 |
| 38 | 451344960 |
[6,28,150,496,528,1980,4560,8128,8736,11400,19872, 20664,75840,82080,253080,254880,741744,1627290, 5130300,5607360,7529760,19645440,20718720, 33550336,35092512,45643392,45995040,56424960, 86944320,169910136,174013920,180442080,196378992, 242040960,304577280,314511360,326611440,451344960] |