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A181391 as a simple table

na(n)
10
20
31
40
52
60
72
82
91
106
110
125
130
142
156
165
174
180
195
203
210
223
232
249
250
264
279
283
296
3014
310
326
333
345
3515
360
375
383
395
402
4117
420
436
4411
450
463
478
480
493
503
511
5242
530
545
5515
5620
570
584
5932
600
613
6211
6318
640
654
667
670
683
697
703
712
7231
730
746
7531
763
776
783
792
808
8133
820
839
8456
850
863
878
887
8919
900
915
9237
930
943
958
968
971

[0,0,1,0,2,0,2,2,1,6,0,5,0,2,6,5,4,0,5,3,0,3,2,9,
 0,4,9,3,6,14,0,6,3,5,15,0,5,3,5,2,17,0,6,11,0,3,8,
 0,3,3,1,42,0,5,15,20,0,4,32,0,3,11,18,0,4,7,0,3,7,
 3,2,31,0,6,31,3,6,3,2,8,33,0,9,56,0,3,8,7,19,0,5,
 37,0,3,8,8,1]