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A171840 as a simple table

na(n)
11
21
32
41
52
65
71
82
94
1015
111
122
134
149
1552
161
172
184
198
2023
21203
221
232
244
258
2617
2765
28877
291
302
314
328
3316
3440
35199
364140
371
382
394
408
4116
4233
43104
44654
4521147
461
472
484
498
5016
5132
5273
53291
542296
55115975
561
572
584
598
6016
6132
6265
63177
64857
658569
66678570

[1,1,2,1,2,5,1,2,4,15,1,2,4,9,52,1,2,4,8,23,203,1,
 2,4,8,17,65,877,1,2,4,8,16,40,199,4140,1,2,4,8,16,
 33,104,654,21147,1,2,4,8,16,32,73,291,2296,115975,
 1,2,4,8,16,32,65,177,857,8569,678570]