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A191998 as a simple table

na(n)
11
23
39
421
5231
6847
72541
816093
933649
1043263
11447051
121043119
1313560547
1483300503
15170222767
16222599003
1713133341177
18774867129443
194719645242971
20335094812250941

[1,3,9,21,231,847,2541,16093,33649,43263,447051,
 1043119,13560547,83300503,170222767,222599003,
 13133341177,774867129443,4719645242971,
 335094812250941]