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A274850 as a simple table

n a(n)
0 1
1 2
2 2
3 2
4 0
5 -2
6 -4
7 -2
8 -6
9 -2
10 4
11 50
12 78
13 34
14 -248
15 -146
16 248
17 1478
18 992
19 -2570
20 -13918
21 -19026
22 -12744
23 68034
24 193088
25 380810
26 86880
27 -1362006
28 -5050422
29 -6966190
30 1464256
31 39349110
32 99348446
33 130130462
34 -62116516
35 -664338662
36 -1811216390
37 -2530859462
38 -458383728
39 9647822334
40 29564081352
41 51363216966
42 35437251200
43 -72752696138
44 -343482383882
45 -735851485042
46 -1167503794928
47 -1270647820502
48 -634163168566
49 3532238523874
50 18635012627076

[1,2,2,2,0,-2,-4,-2,-6,-2,4,50,78,34,-248,-146,
 248,1478,992,-2570,-13918,-19026,-12744,68034,
 193088,380810,86880,-1362006,-5050422,-6966190,
 1464256,39349110,99348446,130130462,-62116516,
 -664338662,-1811216390,-2530859462,-458383728,
 9647822334,29564081352,51363216966,35437251200,
 -72752696138,-343482383882,-735851485042,
 -1167503794928,-1270647820502,-634163168566,
 3532238523874,18635012627076]

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Last modified September 25 15:49 EDT 2020. Contains 337344 sequences. (Running on oeis4.)