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A071090 as a simple table

na(n)
11
21
30
42
50
65
70
82
93
100
110
127
130
140
158
164
170
183
190
209
210
220
230
2410
255
260
270
2811
290
3011
310
324
330
340
3512
366
370
380
390
4013
410
4213
430
440
4514
460
470
4814
497
505
510
520
530
5415
550
5615
570
580
590
6016
610
620
6316
648
650
6617
670
680
690
7017
710
7223
730
740
750
760
7718
780
790
8018
819
820
830
8419
850
860
870
8819
890
9019
9120
920
930

[1,1,0,2,0,5,0,2,3,0,0,7,0,0,8,4,0,3,0,9,0,0,0,10,
 5,0,0,11,0,11,0,4,0,0,12,6,0,0,0,13,0,13,0,0,14,0,
 0,14,7,5,0,0,0,15,0,15,0,0,0,16,0,0,16,8,0,17,0,0,
 0,17,0,23,0,0,0,0,18,0,0,18,9,0,0,19,0,0,0,19,0,
 19,20,0,0]