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A270979 as a simple table

na(n)
03
19
219
3-11
447
5-28
6117
7-73
8164
9-91
10235
11-271
12395
13-311
14427
15-323
16611
17-519
18699
19-699
201007
21-867
221091
23-951
241267
25-1071
261407
27-1459
281803
29-1651
301879
31-1583
322131
33-1947
342379
35-2339
362799
37-2735
383075
39-2667
403427
41-3283
423639
43-3367
444051

[3,9,19,-11,47,-28,117,-73,164,-91,235,-271,395,
 -311,427,-323,611,-519,699,-699,1007,-867,1091,
 -951,1267,-1071,1407,-1459,1803,-1651,1879,-1583,
 2131,-1947,2379,-2339,2799,-2735,3075,-2667,3427,
 -3283,3639,-3367,4051]