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A246882 as a simple table

n a(n)
0 1
1 0
2 -1
3 -1
4 4
5 10
6 -16
7 -58
8 139
9 549
10 -862
11 -4468
12 6470
13 41631
14 -38057
15 -384497
16 190622
17 3773087
18 -107999
19 -37440917
20 -12558347
21 374625122
22 240279936
23 -3657434817
24 -3489240401
25 34354613614
26 49461991317
27 -310025049551
28 -716262462758
29 2811996166969
30 10210014807369

[1,0,-1,-1,4,10,-16,-58,139,549,-862,-4468,6470,
 41631,-38057,-384497,190622,3773087,-107999,
 -37440917,-12558347,374625122,240279936,
 -3657434817,-3489240401,34354613614,49461991317,
 -310025049551,-716262462758,2811996166969,
 10210014807369]

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Last modified August 1 16:59 EDT 2021. Contains 346400 sequences. (Running on oeis4.)