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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 1 |
| 5 | 28 |
| 6 | 28 |
| 7 | 1 |
| 8 | 120 |
| 9 | 280 |
| 10 | 1680 |
| 11 | 840 |
| 12 | 1 |
| 13 | 496 |
| 14 | 9920 |
| 15 | 29760 |
| 16 | 138880 |
| 17 | 277760 |
| 18 | 83328 |
| 19 | 1 |
| 20 | 2016 |
| 21 | 166656 |
| 22 | 499968 |
| 23 | 357120 |
| 24 | 19998720 |
| 25 | 19998720 |
| 26 | 15554560 |
| 27 | 139991040 |
| 28 | 139991040 |
| 29 | 27998208 |
| 30 | 1 |
| 31 | 8128 |
| 32 | 2731008 |
| 33 | 8193024 |
| 34 | 48377856 |
| 35 | 1354579968 |
| 36 | 1354579968 |
| 37 | 2902671360 |
| 38 | 13545799680 |
| 39 | 81274798080 |
| 40 | 40637399040 |
| 41 | 126427463680 |
| 42 | 379282391040 |
| 43 | 227569434624 |
| 44 | 32509919232 |
[1,1,1,3,1,28,28,1,120,280,1680,840,1,496,9920, 29760,138880,277760,83328,1,2016,166656,499968, 357120,19998720,19998720,15554560,139991040, 139991040,27998208,1,8128,2731008,8193024, 48377856,1354579968,1354579968,2902671360, 13545799680,81274798080,40637399040,126427463680, 379282391040,227569434624,32509919232] |