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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 24 |
| 4 | 0 |
| 5 | 224 |
| 6 | -64 |
| 7 | 2880 |
| 8 | -1920 |
| 9 | 0 |
| 10 | 48064 |
| 11 | -49984 |
| 12 | 1024 |
| 13 | 989184 |
| 14 | -1365504 |
| 15 | 129024 |
| 16 | 0 |
| 17 | 24218624 |
| 18 | -40854528 |
| 19 | 8583168 |
| 20 | -16384 |
| 21 | 687083520 |
| 22 | -1352540160 |
| 23 | 471859200 |
| 24 | -8355840 |
| 25 | 0 |
| 26 | 22151148544 |
| 27 | -49507063808 |
| 28 | 24589796352 |
| 29 | -1331806208 |
| 30 | 262144 |
| 31 | 799546834944 |
| 32 | -1993321955328 |
| 33 | 1286051069952 |
| 34 | -141582532608 |
| 35 | 536346624 |
| 36 | 0 |
| 37 | 31934834253824 |
| 38 | -87721489006592 |
| 39 | 69349000355840 |
| 40 | -12549922078720 |
| 41 | 198078103552 |
| 42 | -4194304 |
[1,4,24,0,224,-64,2880,-1920,0,48064,-49984,1024, 989184,-1365504,129024,0,24218624,-40854528, 8583168,-16384,687083520,-1352540160,471859200, -8355840,0,22151148544,-49507063808,24589796352, -1331806208,262144,799546834944,-1993321955328, 1286051069952,-141582532608,536346624,0, 31934834253824,-87721489006592,69349000355840, -12549922078720,198078103552,-4194304] |