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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | -4 |
| 4 | 6 |
| 5 | -8 |
| 6 | 0 |
| 7 | -12 |
| 8 | -8400 |
| 9 | 40304 |
| 10 | 0 |
| 11 | -20 |
| 12 | -12640320 |
| 13 | -24 |
| 14 | 0 |
| 15 | -50854003228 |
| 16 | 523588665600 |
| 17 | -32 |
| 18 | 0 |
| 19 | -36 |
| 20 | -47601422668800 |
| 21 | -351419178958848040 |
| 22 | 0 |
| 23 | -44 |
| 24 | -2657154018657032294400 |
| 25 | 60321372390731612159952 |
| 26 | 0 |
| 27 | -3140712271670490316800052 |
| 28 | -542080978696857600000 |
| 29 | -56 |
| 30 | 0 |
| 31 | -60 |
| 32 | -348600503774477204939323514880000 |
| 33 | -50178168859710075748378214400064 |
| 34 | 0 |
| 35 | -1161795736961405183891091750912000068 |
[1,0,0,-4,6,-8,0,-12,-8400,40304,0,-20,-12640320, -24,0,-50854003228,523588665600,-32,0,-36, -47601422668800,-351419178958848040,0,-44, -2657154018657032294400,60321372390731612159952,0, -3140712271670490316800052,-542080978696857600000, -56,0,-60,-348600503774477204939323514880000, -50178168859710075748378214400064,0, -1161795736961405183891091750912000068] |