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A084289 as a simple table

na(n)
13
27
361
479
5619
61669
74093
8822631
91324783
102411797
112588869
122778877
133243589
143636631
153736477
165527189
176115717
186405943
198720191
209005989
2112752029
2216056031
2316589317
2418087991
2521743551
2625230511
2729343871
2834586131
2937736431
3039150037
3140056229

[3,7,61,79,619,1669,4093,822631,1324783,2411797,
 2588869,2778877,3243589,3636631,3736477,5527189,
 6115717,6405943,8720191,9005989,12752029,16056031,
 16589317,18087991,21743551,25230511,29343871,
 34586131,37736431,39150037,40056229]