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A091154 as a simple table

n a(n)
1 1
2 1
3 -1
4 1
5 -5
6 7
7 -21
8 11
9 -429
10 715
11 -2431
12 4199
13 -29393
14 52003
15 -185725
16 334305
17 -3231615
18 3535767
19 -64822395
20 39803225
21 -883631595
22 1641030105
23 -407771117
24 11435320455
25 -171529806825
26 107492012277
27 -1215486600363
28 2295919134019

[1,1,-1,1,-5,7,-21,11,-429,715,-2431,4199,-29393,
 52003,-185725,334305,-3231615,3535767,-64822395,
 39803225,-883631595,1641030105,-407771117,
 11435320455,-171529806825,107492012277,
 -1215486600363,2295919134019]

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)