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A013237 as a simple table

n a(n)
0 0
1 0
2 -1
3 0
4 -6
5 8
6 -90
7 448
8 -2520
9 26336
10 -120960
11 1722688
12 -8914752
13 110138624
14 -763819056
15 2510508544
16 -23764540800
17 -1852444415488
18 25138910788992
19 -839278029937664
20 14518492774196480
21 -301837255570263040
22 6080193763585041408
23 -100072615179212095488

[0,0,-1,0,-6,8,-90,448,-2520,26336,-120960,
 1722688,-8914752,110138624,-763819056,2510508544,
 -23764540800,-1852444415488,25138910788992,
 -839278029937664,14518492774196480,
 -301837255570263040,6080193763585041408,
 -100072615179212095488]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)