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A280830 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
161
170
180
190
201
210
220
230
241
250
261
270
281
290
301
310
321
330
340
351
362
370
382
391
402
410
421
430
440
451
461
471
482
490
502
510
521
531
542
551
562
572
582
590
603
610
623
631
642
651
660
670
681
691
703
712
724
731
742
752
761
771
783
791
803
811
822
832
843
850
864
872
884
891
904

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