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A119959 as a simple table

na(n)
13
27
321
443
5111
6157
7273
8343
9507
10813
11931
121333
131641
141807
152163
162757
173423
183661
194423
204971
215257
226163
236807
247833
259313
2610101
2710507
2811343
2911773
3012657
3116003
3217031
3318633
3419183
3522053
3622651
3724493
3826407
3927723
4029757
4131863

[3,7,21,43,111,157,273,343,507,813,931,1333,1641,
 1807,2163,2757,3423,3661,4423,4971,5257,6163,6807,
 7833,9313,10101,10507,11343,11773,12657,16003,
 17031,18633,19183,22053,22651,24493,26407,27723,
 29757,31863]