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A106507 as a simple table

na(n)
01
1-1
21
3-2
43
5-4
65
7-7
810
9-13
1016
11-21
1228
13-35
1443
15-55
1670
17-86
18105
19-130
20161
21-196
22236
23-287
24350
25-420
26501
27-602
28722
29-858
301016
31-1206
321431
33-1687
341981
35-2331
362741
37-3206
383740
39-4368
405096
41-5922
426868
43-7967
449233
45-10670
4612306
47-14193

[1,-1,1,-2,3,-4,5,-7,10,-13,16,-21,28,-35,43,-55,
 70,-86,105,-130,161,-196,236,-287,350,-420,501,
 -602,722,-858,1016,-1206,1431,-1687,1981,-2331,
 2741,-3206,3740,-4368,5096,-5922,6868,-7967,9233,
 -10670,12306,-14193]