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A133631 as a simple table

n a(n)
0 1
1 2
2 -2
3 -10
4 -2
5 38
6 46
7 -106
8 -290
9 134
10 1294
11 758
12 -4418
13 -7450
14 10222
15 40022
16 -866
17 -160954
18 -157490
19 486326
20 1116286
21 -829018
22 -5294162
23 -1978090
24 19198558
25 27110918
26 -49683314
27 -158126986
28 40606270
29 673114214
30 510689134
31 -2181767722
32 -4224524258

[1,2,-2,-10,-2,38,46,-106,-290,134,1294,758,-4418,
 -7450,10222,40022,-866,-160954,-157490,486326,
 1116286,-829018,-5294162,-1978090,19198558,
 27110918,-49683314,-158126986,40606270,673114214,
 510689134,-2181767722,-4224524258]

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Last modified January 24 01:20 EST 2021. Contains 340398 sequences. (Running on oeis4.)