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A226657 as a simple table

na(n)
15
27
323
4389
5409
61511
75309
83373
97351
1037223
1119867
1218593
13142811
1414563
1513933
16763271
17276637
18174491
19363989
20383179
21180907
22687179
238066923
24913589
25458069
266358777
272507093
285650871
299182389
305256071
3110237391
329955009
334091393
3424374033

[5,7,23,389,409,1511,5309,3373,7351,37223,19867,
 18593,142811,14563,13933,763271,276637,174491,
 363989,383179,180907,687179,8066923,913589,458069,
 6358777,2507093,5650871,9182389,5256071,10237391,
 9955009,4091393,24374033]