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A374157 as a simple table

na(n)
00
11
2-2
3-3
44
55
6-6
7-7
88
99
10-10
11-11
1212
1313
14-14
15-15
1616
1717
18-18
19-19
2020
2121
22-22
23-23
2424
2525
26-26
27-27
2828
2929
30-30
31-31
3232
3333
34-34
35-35
3636
3737
38-38
39-39
4040
4141
42-42
43-43
4444
4545
46-46
47-47
4848
4949
50-50
51-51
5252
5353
54-54
55-55
5656
5757
58-58
59-59

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