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A291900 as a simple table

na(n)
10
20
30
41
51
61
70
80
92
100
110
122
130
143
150
160
172
180
199
200
210
222
232
247
250
264
270
283
296
300
310
323
335
347
350
360
370
380
3915
406
410
423
430
449
454
460
4710
480
4913
505
510
523
533
5422
550
564
570
585
5912
600
6119
620
630
6413
650
660
670
6810
6914
704
716
727
735
7419
7511
760
770
780
7916
805
814
8212
838
8428
850
860
870
880
8935
906
914
920
935
9432
954
9618
978
980
9931
1000

[0,0,0,1,1,1,0,0,2,0,0,2,0,3,0,0,2,0,9,0,0,2,2,7,
 0,4,0,3,6,0,0,3,5,7,0,0,0,0,15,6,0,3,0,9,4,0,10,0,
 13,5,0,3,3,22,0,4,0,5,12,0,19,0,0,13,0,0,0,10,14,
 4,6,7,5,19,11,0,0,0,16,5,4,12,8,28,0,0,0,0,35,6,4,
 0,5,32,4,18,8,0,31,0]