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A007439 as a simple table

na(n)
11
21
31
42
52
64
73
87
94
1011
116
1215
137
1424
158
1629
1712
1840
1913
2051
2114
2268
2319
2476
2520
26107
2723
28116
2929
30147
3130
32175
3331
34215
3539
36229
3745
38297
3946
40312
4155
42387
4356
44435
4557
46513
4773
48534
4974
50670
5178
52705
5392
54823
5593
56897
57102
581051
59117
601082

[1,1,1,2,2,4,3,7,4,11,6,15,7,24,8,29,12,40,13,51,
 14,68,19,76,20,107,23,116,29,147,30,175,31,215,39,
 229,45,297,46,312,55,387,56,435,57,513,73,534,74,
 670,78,705,92,823,93,897,102,1051,117,1082]