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A085456 as a simple table

n a(n)
0 1
1 -4
2 20
3 -116
4 708
5 -4452
6 28532
7 -185300
8 1215268
9 -8030404
10 53381844
11 -356577588
12 2391430020
13 -16092704292
14 108605848116
15 -734783381652
16 4982063186916
17 -33844621986180
18 230306722637204
19 -1569571734301172
20 10711405584991300
21 -73188920628617956
22 500643475619050740

[1,-4,20,-116,708,-4452,28532,-185300,1215268,
 -8030404,53381844,-356577588,2391430020,
 -16092704292,108605848116,-734783381652,
 4982063186916,-33844621986180,230306722637204,
 -1569571734301172,10711405584991300,
 -73188920628617956,500643475619050740]

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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)