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A068452 as a simple table

na(n)
19
21
32
40
54
62
70
86
94
100
114
1211
136
144
1514
168
1712
186
1918
2012
2112
2214
2313
242
257
2620
2712
282
2916
3021
3125
3226
3329
3419
357
363
3720
383
3938
407
4112
4219
4337
441
4523
4632
4719
4832
4938
5045
5145
5227
5344
5434
5514
5649
5735
5829
5930
6057
6157
6218
6356
6448
6533
6619
6744
6835
6912
7056
7128
7238
7364
7435
7510
7645
7735
780

[9,1,2,0,4,2,0,6,4,0,4,11,6,4,14,8,12,6,18,12,12,
 14,13,2,7,20,12,2,16,21,25,26,29,19,7,3,20,3,38,7,
 12,19,37,1,23,32,19,32,38,45,45,27,44,34,14,49,35,
 29,30,57,57,18,56,48,33,19,44,35,12,56,28,38,64,
 35,10,45,35,0]