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A227520 as a simple table

na(n)
161
273
3-135
4-141
5255
6321
7481
8-767
9-837
10-1065
11-1443
12-1481
131579
141611
15-1689
161711
17-1761
18-1865
19-1943
20-2547
212577
22-2753
23-2831
24-2981
25-3209
26-3243
273445
28-3543
29-3735
303909
31-4041
324219
334471
344549
35-4587
36-4791
37-4833
38-4853
39-4875
404891
415071
42-5259
43-5379
445421
45-5673
46-5921
47-5979
48-6215
496529
50-6689
51-6773
52-6897
536915
546943

[61,73,-135,-141,255,321,481,-767,-837,-1065,
 -1443,-1481,1579,1611,-1689,1711,-1761,-1865,
 -1943,-2547,2577,-2753,-2831,-2981,-3209,-3243,
 3445,-3543,-3735,3909,-4041,4219,4471,4549,-4587,
 -4791,-4833,-4853,-4875,4891,5071,-5259,-5379,
 5421,-5673,-5921,-5979,-6215,6529,-6689,-6773,
 -6897,6915,6943]