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A022716 as a simple table

n a(n)
0 1
1 -24
2 252
3 -1520
4 5982
5 -18240
6 57320
7 -198192
8 604389
9 -1567840
10 4210116
11 -12229632
12 32349958
13 -77844000
14 196563240
15 -510760752
16 1233110610
17 -2871650184
18 6899741020
19 -16499031456
20 37934952672
21 -86122235648

[1,-24,252,-1520,5982,-18240,57320,-198192,604389,
 -1567840,4210116,-12229632,32349958,-77844000,
 196563240,-510760752,1233110610,-2871650184,
 6899741020,-16499031456,37934952672,-86122235648]

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Last modified August 15 02:13 EDT 2022. Contains 356122 sequences. (Running on oeis4.)