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A007912 as a simple table

na(n)
31
41
50
61
75
81
90
101
112
123
130
141
150
161
170
189
192
2015
210
221
232
249
250
261
270
287
290
3015
312
321
330
341
350
3627
370
381
390
4025
410
4221
432
4411
450
461
4745
4833
490
5025
510
5239
530
5427
550
5649
570
581
5957
6015
610
621
630
641
650
6633
672
6851
690
7035
712
729
730
741
750
7619
770
7839
7977
8065
810
821
8381
8463
850
861
870
8833
890
9045
910

[1,1,0,1,5,1,0,1,2,3,0,1,0,1,0,9,2,15,0,1,2,9,0,1,
 0,7,0,15,2,1,0,1,0,27,0,1,0,25,0,21,2,11,0,1,45,
 33,0,25,0,39,0,27,0,49,0,1,57,15,0,1,0,1,0,33,2,
 51,0,35,2,9,0,1,0,19,0,39,77,65,0,1,81,63,0,1,0,
 33,0,45,0]