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A121869 as a simple table

n a(n)
0 -1
1 1
2 0
3 -5
4 -15
5 104
6 1827
7 7893
8 -207000
9 -5646249
10 -47897675
11 1479282600
12 74711288407
13 1396956334921
14 -21032523700672
15 -2719998717430365
16 -104158663871982343
17 -715846242343471272
18 189941380201812700699
19 14820744271258596866013
20 507768838531742620183176

[-1,1,0,-5,-15,104,1827,7893,-207000,-5646249,
 -47897675,1479282600,74711288407,1396956334921,
 -21032523700672,-2719998717430365,
 -104158663871982343,-715846242343471272,
 189941380201812700699,14820744271258596866013,
 507768838531742620183176]

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Last modified May 21 02:48 EDT 2019. Contains 323434 sequences. (Running on oeis4.)