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A193378 as a simple table

n a(n)
2 2
3 -4
4 2
5 -4
6 -20
7 56
8 -126
9 -4
10 308
11 -696
12 5444
13 7224
14 -7272
15 -14224
16 -191022
17 -450404
18 39524
19 2309416
20 5059084
21 20045736
22 18158632
23 -170205936
24 -18475212
25 -725028200
26 -1746739960
27 9540210896
28 -10852826168
29 16441084912
30 107790254896
31 -422324078368
32 1055213939634

[2,-4,2,-4,-20,56,-126,-4,308,-696,5444,7224,
 -7272,-14224,-191022,-450404,39524,2309416,
 5059084,20045736,18158632,-170205936,-18475212,
 -725028200,-1746739960,9540210896,-10852826168,
 16441084912,107790254896,-422324078368,
 1055213939634]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)