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A033920 as a simple table

na(n)
10
20
30
40
50
63
77
80
93
102
113
127
130
143
157
165
175
180
197
207
217
227
233
240
257
260
273
287
290
3013
317
3231
3337
3413
350
365
377
383
3967
4073
4179
420
4319
4419
4597
4619
4711
4823
497
5029
5123
5223
5341
545
557
563
572
5871
597
602
6183
6229
637
6431
6531
6631
6731
6837
6947
703
7153
7259
7367
7473
7579
7683
7789
7897
790
800
8141
822
8343
8443
8543

[0,0,0,0,0,3,7,0,3,2,3,7,0,3,7,5,5,0,7,7,7,7,3,0,
 7,0,3,7,0,13,7,31,37,13,0,5,7,3,67,73,79,0,19,19,
 97,19,11,23,7,29,23,23,41,5,7,3,2,71,7,2,83,29,7,
 31,31,31,31,37,47,3,53,59,67,73,79,83,89,97,0,0,
 41,2,43,43,43]