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A227839 as a simple table

na(n)
10
21
31
40
50
60
70
81
91
100
110
120
130
142
151
160
170
180
190
201
212
220
232
241
250
260
270
280
291
302
310
320
330
340
351
361
370
381
391
400
410
420
430
442
454
460
470
480
490
501
511
520
530
540
550
561
571
580
590
600
610
623
632
640
650
660
670
681
692
700
710
720
730
742
751
760
771
782
790
800
810
820
832
841
850
860
870
880
891
901
910
920
930
940
951
964
970
980
990
1000
1010
1020
1031
1040
1050
1062
1070
1080
1092

[0,1,1,0,0,0,0,1,1,0,0,0,0,2,1,0,0,0,0,1,2,0,2,1,
 0,0,0,0,1,2,0,0,0,0,1,1,0,1,1,0,0,0,0,2,4,0,0,0,0,
 1,1,0,0,0,0,1,1,0,0,0,0,3,2,0,0,0,0,1,2,0,0,0,0,2,
 1,0,1,2,0,0,0,0,2,1,0,0,0,0,1,1,0,0,0,0,1,4,0,0,0,
 0,0,0,1,0,0,2,0,0,2]