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A009661 as a simple table

na(n)
10
20
35
43
52
65
73
87
917
109
1121
1211
136
143
1529
1615
1724
1817
1927
2019
2141
2221
2311
2423
2518
2625
2753
283
2914
3029
3115
3231
3335
3433
3569
3635
376
3827
3977
4039
4125
4241
4363
4435
4589
4611
4723
4847
4997
5049
51101
5251
5326
5453
55109
5655
57113
5835
59117
6059
6130
6215
63125
6463
6518
6635
6799
6867
6911
7069
7135
7271
739
7427

[0,0,5,3,2,5,3,7,17,9,21,11,6,3,29,15,24,17,27,19,
 41,21,11,23,18,25,53,3,14,29,15,31,35,33,69,35,6,
 27,77,39,25,41,63,35,89,11,23,47,97,49,101,51,26,
 53,109,55,113,35,117,59,30,15,125,63,18,35,99,67,
 11,69,35,71,9,27]