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A149521 as a simple table

na(n)
01
11
25
311
451
5147
6691
72229
810569
936587
10174151
11631267
123015819
1311297343
1454109527
15207809319
16997352927
173905712813
1818775928973
1974694466147
20359566404155
211449137185583
226983876576051
2328456062978505
24137272752795641
25564570822135359
262725789916924483
2711301486545827607

[1,1,5,11,51,147,691,2229,10569,36587,174151,
 631267,3015819,11297343,54109527,207809319,
 997352927,3905712813,18775928973,74694466147,
 359566404155,1449137185583,6983876576051,
 28456062978505,137272752795641,564570822135359,
 2725789916924483,11301486545827607]