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A309576 as a simple table

na(n)
10
21
30
40
52
60
71
83
90
100
110
124
130
141
151
165
170
180
192
206
210
221
233
247
250
260
270
280
298
300
311
321
331
349
350
360
372
382
3910
400
411
423
433
4411
450
460
470
484
4912
500
511
521
535
5413
550
560
572
586
5914
600
611
623
637
6415
650
660
670
680
690
7016
710
721
731
741
751
7617
770
780
792
802
812
8218
830
841

[0,1,0,0,2,0,1,3,0,0,0,4,0,1,1,5,0,0,2,6,0,1,3,7,
 0,0,0,0,8,0,1,1,1,9,0,0,2,2,10,0,1,3,3,11,0,0,0,4,
 12,0,1,1,5,13,0,0,2,6,14,0,1,3,7,15,0,0,0,0,0,16,
 0,1,1,1,1,17,0,0,2,2,2,18,0,1]