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A219481 as a simple table

na(n)
01
11
20
30
40
50
60
70
81
92
101
110
120
130
140
150
160
172
182
190
200
210
220
230
240
251
263
272
280
290
300
310
320
330
342
353
361
370
380
390
400
410
420
433
443
450
460
470
480
490
500
512
524
532
540
550
560
570
580
590
603
613
620
630
640
650
660
670
681
694
703
710
720
730
740
750
760
773
785
792
800
810
820
830
840
850
864
874
880
890
900
910
920
930
942
955
963
970
980
990
1000

[1,1,0,0,0,0,0,0,1,2,1,0,0,0,0,0,0,2,2,0,0,0,0,0,
 0,1,3,2,0,0,0,0,0,0,2,3,1,0,0,0,0,0,0,3,3,0,0,0,0,
 0,0,2,4,2,0,0,0,0,0,0,3,3,0,0,0,0,0,0,1,4,3,0,0,0,
 0,0,0,3,5,2,0,0,0,0,0,0,4,4,0,0,0,0,0,0,2,5,3,0,0,
 0,0]