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A271308 as a simple table

na(n)
03
15
223
3-19
471
5-63
6151
7-147
8247
9-223
10359
11-327
12491
13-499
14731
15-675
16827
17-791
181095
19-1099
201359
21-1331
221615
23-1591
241911
25-1903
262295
27-2211
282507
29-2423
302879
31-2895
323231
33-3191
343703
35-3651
364227
37-4223
384599
39-4535
405203
41-5047
425623
43-5595

[3,5,23,-19,71,-63,151,-147,247,-223,359,-327,491,
 -499,731,-675,827,-791,1095,-1099,1359,-1331,1615,
 -1591,1911,-1903,2295,-2211,2507,-2423,2879,-2895,
 3231,-3191,3703,-3651,4227,-4223,4599,-4535,5203,
 -5047,5623,-5595]