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A003138 as a simple table

na(n)
124
236
356
490
5149
6252
7435
8765
91363
102455
114466
128190
1315122
1428085
1552427
1698303
17185041
18349524
19662257
201258290
212396744
224575603
238753329
2416777215
2532212254
2661946643
27119304646
28230087533

[24,36,56,90,149,252,435,765,1363,2455,4466,8190,
 15122,28085,52427,98303,185041,349524,662257,
 1258290,2396744,4575603,8753329,16777215,32212254,
 61946643,119304646,230087533]