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A210246 as a simple table

n a(n)
0 1
1 -1
2 -2
3 2
4 40
5 104
6 -1232
7 -13168
8 16000
9 1483904
10 9695488
11 -151161088
12 -3287997440
13 146760704
14 866038110208
15 10263094740992
16 -169941494497280
17 -6324725967978496
18 -15215847186563072
19 2895126258819203072
20 54295929047166484480

[1,-1,-2,2,40,104,-1232,-13168,16000,1483904,
 9695488,-151161088,-3287997440,146760704,
 866038110208,10263094740992,-169941494497280,
 -6324725967978496,-15215847186563072,
 2895126258819203072,54295929047166484480]

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Last modified September 19 16:34 EDT 2024. Contains 376014 sequences. (Running on oeis4.)