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A274040 as a simple table

n a(n)
1 1
2 1
3 3
4 1
5 115
6 11
7 43141
8 733
9 -722109
10 -1093
11 143795597
12 47489
13 14249936103
14 5276161 

[1,1,3,1,115,11,43141,733,-722109,-1093,143795597,
 47489,14249936103,5276161]

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Last modified August 9 07:11 EDT 2022. Contains 356019 sequences. (Running on oeis4.)