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A168261 as a simple table

na(n)
11
21
31
40
50
62
71
81
90
102
110
120
130
140
154
160
170
182
190
200
214
220
230
240
250
260
270
286
291
301
310
322
330
340
350
366
370
380
390
400
410
420
430
440
4510
460
470
480
490
504
510
520
530
540
5510
560
570
580
590
600
610
620
630
640
650
6614
670
680
692
700
710
724
730
740
750
760
770
7814
790
800
810
820
830
840
850
860
870
880
890
900
9120

[1,1,1,0,0,2,1,1,0,2,0,0,0,0,4,0,0,2,0,0,4,0,0,0,
 0,0,0,6,1,1,0,2,0,0,0,6,0,0,0,0,0,0,0,0,10,0,0,0,
 0,4,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,14,0,0,2,0,0,4,
 0,0,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,20]