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A225128 as a simple table

n a(n)
1 1
2 -7
3 16
4 -52
5 412
6 -2068
7 6964
8 -19960
9 81880
10 -396844
11 1448908
12 -3853348
13 9668860
14 -45544768
15 238303744
16 -764868256
17 1962327904
18 -9820441204
19 62744531956
20 -306405293056
21 1228176071080
22 -5276516025688
23 26307346186816
24 -126143746044604
25 534479888324932

[1,-7,16,-52,412,-2068,6964,-19960,81880,-396844,
 1448908,-3853348,9668860,-45544768,238303744,
 -764868256,1962327904,-9820441204,62744531956,
 -306405293056,1228176071080,-5276516025688,
 26307346186816,-126143746044604,534479888324932]

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Last modified August 7 12:19 EDT 2020. Contains 336276 sequences. (Running on oeis4.)