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A228549 as a simple table

n a(n)
1 1
2 -1
3 -2
4 3
5 2
6 -1
7 -5
8 25
9 -20
10 -16
11 -7
12 23
13 -39
14 25
15 309
16 455
17 901
18 -2168
19 920
20 1047
21 2302
22 -1536
23 3272
24 161162
25 -289493
26 -529263
27 1418949
28 -1562590
29 -579999
30 15145
31 5844471
32 5244416
33 -65749104
34 176617384
35 2077411081
36 7381004327
37 10211507191
38 -10333531933
39 7086785521
40 8502336136

[1,-1,-2,3,2,-1,-5,25,-20,-16,-7,23,-39,25,309,
 455,901,-2168,920,1047,2302,-1536,3272,161162,
 -289493,-529263,1418949,-1562590,-579999,15145,
 5844471,5244416,-65749104,176617384,2077411081,
 7381004327,10211507191,-10333531933,7086785521,
 8502336136]

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Last modified January 28 10:39 EST 2023. Contains 359859 sequences. (Running on oeis4.)