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A289118 as a simple table

na(n)
13
23
33
423
547
6131
7131
8233
9233
10521
11521
12521
13521
14521
15521
1651749
17505049
181391087
192264839
202556713
212569529
222569529
236160043
246160043
256160043
2643679609
2743679609
28198572029
29701575297
305552898499
316639843979
329005520203
339005520203
3499052377023

[3,3,3,23,47,131,131,233,233,521,521,521,521,521,
 521,51749,505049,1391087,2264839,2556713,2569529,
 2569529,6160043,6160043,6160043,43679609,43679609,
 198572029,701575297,5552898499,6639843979,
 9005520203,9005520203,99052377023]