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A343473 as a simple table

n a(n)
0 1
1 1
2 0
3 -4
4 0
5 16
6 108
7 -64
8 -864
9 -2660
10 -22464
11 33968
12 272268
13 1217152
14 4629312
15 68208188
16 -98077824
17 -1089798320
18 -5246016084
19 -32436365248
20 -180561473568
21 -3404617719332
22 5203858765248
23 55902314446832
24 354805454664396
25 2229923884913920

[1,1,0,-4,0,16,108,-64,-864,-2660,-22464,33968,
 272268,1217152,4629312,68208188,-98077824,
 -1089798320,-5246016084,-32436365248,
 -180561473568,-3404617719332,5203858765248,
 55902314446832,354805454664396,2229923884913920]

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Last modified July 21 06:08 EDT 2024. Contains 374463 sequences. (Running on oeis4.)