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A166871 as a simple table

n a(n)
0 0
1 1
2 2
3 3
4 -1
5 -2
6 4
7 5
8 6
9 -3
10 -4
11 7
12 8
13 9
14 -5
15 -6
16 10
17 11
18 12
19 -7
20 -8
21 13
22 14
23 15
24 -9
25 -10
26 16
27 17
28 18
29 -11
30 -12
31 19
32 20
33 21
34 -13
35 -14
36 22
37 23
38 24
39 -15
40 -16
41 25
42 26
43 27
44 -17
45 -18
46 28
47 29
48 30
49 -19
50 -20
51 31
52 32
53 33
54 -21
55 -22
56 34
57 35
58 36
59 -23
60 -24
61 37
62 38
63 39
64 -25
65 -26
66 40
67 41

[0,1,2,3,-1,-2,4,5,6,-3,-4,7,8,9,-5,-6,10,11,12,
 -7,-8,13,14,15,-9,-10,16,17,18,-11,-12,19,20,21,
 -13,-14,22,23,24,-15,-16,25,26,27,-17,-18,28,29,
 30,-19,-20,31,32,33,-21,-22,34,35,36,-23,-24,37,
 38,39,-25,-26,40,41]

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Last modified February 19 21:59 EST 2019. Contains 320328 sequences. (Running on oeis4.)