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A138676 as a simple table

na(n)
21
32
43
54
67
74
89
96
103
1112
126
1330
145
151
164
1743
1810
197
2036
2157
2254
2331
2460
2545
2688
2727
287
2921
3034
3198
321
33120
34128
3562
36128
37133
385
3984
4044
4122
42128
43112
44128
45172
46128
4767
48210
49105
50128

[1,2,3,4,7,4,9,6,3,12,6,30,5,1,4,43,10,7,36,57,54,
 31,60,45,88,27,7,21,34,98,1,120,128,62,128,133,5,
 84,44,22,128,112,128,172,128,67,210,105,128]