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A049975 as a simple table

na(n)
11
23
33
410
527
647
7101
8239
9670
101104
112215
124467
139126
1419117
1541597
1697844
17274415
18450989
19901985
201804007
213608206
227217277
2314437917
2428890484
2557859695
26116072535
27233498088
28472409446
29966492099
302020166249

[1,3,3,10,27,47,101,239,670,1104,2215,4467,9126,
 19117,41597,97844,274415,450989,901985,1804007,
 3608206,7217277,14437917,28890484,57859695,
 116072535,233498088,472409446,966492099,
 2020166249]