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A188665 as a simple table

na(n)
12
27
371
4109
51321
61453
71621
81951
92719
103373
113853
124639
135791
146427
156733
169619
1710837
1811699
1913933
2015391
2116927
2218517
2320173
2423743
2525633
2628927
2729599
2833151
2940813
3043291
3144959
3247533
3355711
3456671
3558579
3670783
3780671
3884127
3988813

[2,7,71,109,1321,1453,1621,1951,2719,3373,3853,
 4639,5791,6427,6733,9619,10837,11699,13933,15391,
 16927,18517,20173,23743,25633,28927,29599,33151,
 40813,43291,44959,47533,55711,56671,58579,70783,
 80671,84127,88813]