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A193860 as a simple table

na(n)
01
11
25
31
47
519
61
79
833
965
101
1111
1251
13131
14211
151
1613
1773
18233
19473
20665
211
2215
2399
24379
25939
261611
272059
281
2917
30129
31577
321697
333489
345281
356305
361
3719
38163
39835
402851
416883
4212259
4316867
4419171
451
4621
47201
481161
494521
5012585
5126025
5241385
5352905

[1,1,5,1,7,19,1,9,33,65,1,11,51,131,211,1,13,73,
 233,473,665,1,15,99,379,939,1611,2059,1,17,129,
 577,1697,3489,5281,6305,1,19,163,835,2851,6883,
 12259,16867,19171,1,21,201,1161,4521,12585,26025,
 41385,52905]