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A066249 as a simple table

na(n)
13
21
35
42
57
64
78
86
99
1010
1111
1212
1313
1416
1514
1618
1715
1822
1917
2028
2119
2230
2320
2436
2521
2640
2723
2842
2924
3046
3125
3252
3326
3458
3527
3660
3729
3866
3931
4070
4132
4272
4333
4478
4534
4682
4735
4888
4937
5096
5138
52100
5339
54102
5541
56106
5743
58108
5944
60112
6145
62126
6347
64130
6548
66136
6749
68138
6950

[3,1,5,2,7,4,8,6,9,10,11,12,13,16,14,18,15,22,17,
 28,19,30,20,36,21,40,23,42,24,46,25,52,26,58,27,
 60,29,66,31,70,32,72,33,78,34,82,35,88,37,96,38,
 100,39,102,41,106,43,108,44,112,45,126,47,130,48,
 136,49,138,50]