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A280494 as a simple table

na(n)
11
21
32
41
50
63
71
80
92
104
111
120
133
140
155
161
170
180
192
203
216
221
230
240
250
260
270
287
291
300
310
320
332
340
354
368
371
380
393
400
410
420
437
440
459
461
470
480
490
503
512
520
536
545
5510
561
570
580
590
600
610
620
630
640
650
6611
671
680
690
700
710
720
732
740
753
764
776
7812
791
800
810
820
830
840
850
860
870
880
890
900
9113
921
930
940
950
960
970
980
992
1000
1010
1020
1030
1047
10514
1061
1070
1080
1090
1100
1110
1120
1130
1140
1150
1163
1170
1185
1190
12015

[1,1,2,1,0,3,1,0,2,4,1,0,3,0,5,1,0,0,2,3,6,1,0,0,
 0,0,0,7,1,0,0,0,2,0,4,8,1,0,3,0,0,0,7,0,9,1,0,0,0,
 3,2,0,6,5,10,1,0,0,0,0,0,0,0,0,0,11,1,0,0,0,0,0,2,
 0,3,4,6,12,1,0,0,0,0,0,0,0,0,0,0,0,13,1,0,0,0,0,0,
 0,2,0,0,0,0,7,14,1,0,0,0,0,0,0,0,0,0,3,0,5,0,15]