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A174269 as a simple table

na(n)
10
21
33
44
55
67
78
813
916
1017
1119
1231
1361
1489
15107
16127
17521
18607
191279
202203
212281
223217
234253
244423
259689
269941
2711213
2819937
2921701
3023209
3144497
3286243
33110503
34132049
35216091
36756839
37859433
381257787
391398269
402976221
413021377
426972593
4313466917

[0,1,3,4,5,7,8,13,16,17,19,31,61,89,107,127,521,
 607,1279,2203,2281,3217,4253,4423,9689,9941,11213,
 19937,21701,23209,44497,86243,110503,132049,
 216091,756839,859433,1257787,1398269,2976221,
 3021377,6972593,13466917]