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A271296 as a simple table

na(n)
03
11
239
3-39
499
5-91
6191
7-183
8319
9-315
10471
11-463
12639
13-627
14863
15-839
161103
17-1119
181391
19-1359
201679
21-1679
221987
23-1943
242351
25-2315
262727
27-2759
283103
29-3003
303511
31-3515
324091
33-4139
344603
35-4535
365135
37-5131
385703
39-5643
406211
41-6183
426863

[3,1,39,-39,99,-91,191,-183,319,-315,471,-463,639,
 -627,863,-839,1103,-1119,1391,-1359,1679,-1679,
 1987,-1943,2351,-2315,2727,-2759,3103,-3003,3511,
 -3515,4091,-4139,4603,-4535,5135,-5131,5703,-5643,
 6211,-6183,6863]