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A181667 as a simple table

na(n)
11
25
311
411
517
617
741
841
941
1041
1141
1241
1319421
1419421
15333491
16601037
17601037
185237651
199063641
2012899891
2124073871
2224073871
2328537121
2467374467
2567374467
2667374467
2767374467
28146452961
2913236860171
3013236860171
3117959429571
3257391479317
3357391479317

[1,5,11,11,17,17,41,41,41,41,41,41,19421,19421,
 333491,601037,601037,5237651,9063641,12899891,
 24073871,24073871,28537121,67374467,67374467,
 67374467,67374467,146452961,13236860171,
 13236860171,17959429571,57391479317,57391479317]