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A212321 as a simple table

na(n)
11
21
31
41
51
63
79
85
95
103
111
121
137
141
1513
1611
1715
1821
1923
2015
2117
225
2325
2425
257
2685
279
2825
291
3021
319
3213
3317
345
3549
3639
3745
381
3943
4051
41145
4217
43143
4485
4519
4681
4763
4843
4947
5077
5123
521
533
5421
5517
5647
5737
583
597
6067
6123
6223
6325
6445
6581
665
6739
68145
6971
7021
7141

[1,1,1,1,1,3,9,5,5,3,1,1,7,1,13,11,15,21,23,15,17,
 5,25,25,7,85,9,25,1,21,9,13,17,5,49,39,45,1,43,51,
 145,17,143,85,19,81,63,43,47,77,23,1,3,21,17,47,
 37,3,7,67,23,23,25,45,81,5,39,145,71,21,41]