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A108494 as a simple table

n a(n)
0 1
1 -2
2 2
3 -4
4 6
5 -8
6 12
7 -16
8 22
9 -30
10 40
11 -52
12 68
13 -88
14 112
15 -144
16 182
17 -228
18 286
19 -356
20 440
21 -544
22 668
23 -816
24 996
25 -1210
26 1464
27 -1768
28 2128
29 -2552
30 3056
31 -3648
32 4342
33 -5160
34 6116
35 -7232
36 8538
37 -10056
38 11820
39 -13872
40 16248
41 -18996
42 22176
43 -25844
44 30068
45 -34936
46 40528

[1,-2,2,-4,6,-8,12,-16,22,-30,40,-52,68,-88,112,
 -144,182,-228,286,-356,440,-544,668,-816,996,
 -1210,1464,-1768,2128,-2552,3056,-3648,4342,-5160,
 6116,-7232,8538,-10056,11820,-13872,16248,-18996,
 22176,-25844,30068,-34936,40528]

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Last modified April 18 10:40 EDT 2024. Contains 371779 sequences. (Running on oeis4.)