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A203999 as a simple table

na(n)
11
2-1
3-4
4-6
51
67
727
817
9-1
10-10
11-60
12-99
13-36
141
1513
16105
17279
18269
1965
20-1
21-16
22-162
23-593
24-944
25-609
26-106
271
2819
29231
301077
312405
322610
331218
34161
35-1
36-22
37-312
38-1767
39-5092
40-7865
41-6264
42-2226
43-232
441
4525
46405
472699
489541

[1,-1,-4,-6,1,7,27,17,-1,-10,-60,-99,-36,1,13,105,
 279,269,65,-1,-16,-162,-593,-944,-609,-106,1,19,
 231,1077,2405,2610,1218,161,-1,-22,-312,-1767,
 -5092,-7865,-6264,-2226,-232,1,25,405,2699,9541]