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A274922 as a simple table

na(n)
01
1-1
22
3-3
44
5-5
66
7-7
88
9-9
1010
11-11
1212
13-13
1414
15-15
1616
17-17
1818
19-19
2020
21-21
2222
23-23
2424
25-25
2626
27-27
2828
29-29
3030
31-31
3232
33-33
3434
35-35
3636
37-37
3838
39-39
4040
41-41
4242
43-43
4444
45-45
4646
47-47
4848
49-49
5050
51-51
5252
53-53
5454
55-55
5656
57-57
5858
59-59

[1,-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]