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A270320 as a simple table

na(n)
07
1-4
240
3-39
4111
5-104
6197
7-197
8336
9-323
10467
11-455
12659
13-639
14835
15-832
161105
17-1077
181348
19-1347
201667
21-1644
221977
23-1937
242313
25-2329
262752
27-2663
283039
29-3028
303513
31-3509
324053
33-4037
344501
35-4441
365057
37-5073
385633
39-5593
406208
41-6043
426611

[7,-4,40,-39,111,-104,197,-197,336,-323,467,-455,
 659,-639,835,-832,1105,-1077,1348,-1347,1667,
 -1644,1977,-1937,2313,-2329,2752,-2663,3039,-3028,
 3513,-3509,4053,-4037,4501,-4441,5057,-5073,5633,
 -5593,6208,-6043,6611]