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A009415 as a simple table

n a(n)
0 0
1 1
2 -1
3 5
4 -12
5 9
6 -105
7 1413
8 -8176
9 42801
10 -442665
11 5165445
12 -54556524
13 637139385
14 -8293744641
15 113478922053
16 -1717525727040
17 28284932778977
18 -475222905120177
19 8340834063368709
20 -159725733100784940
21 3244894614657423849

[0,1,-1,5,-12,9,-105,1413,-8176,42801,-442665,
 5165445,-54556524,637139385,-8293744641,
 113478922053,-1717525727040,28284932778977,
 -475222905120177,8340834063368709,
 -159725733100784940,3244894614657423849]

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)