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A247649 as a simple table

na(n)
01
15
25
37
45
517
67
719
85
925
1017
1119
127
1331
1419
1525
165
1725
1825
1935
2017
2161
2219
2371
247
2535
2631
2741
2819
2971
3025
3177
325
3325
3425
3535
3625
3785
3835
3995
4017
4185
4261
4371
4419
4591
4671
4777
487
4935
5035
5149
5231
53107
5441
55121
5619
5795
5871
5985
6025
61113
6277
63103

[1,5,5,7,5,17,7,19,5,25,17,19,7,31,19,25,5,25,25,
 35,17,61,19,71,7,35,31,41,19,71,25,77,5,25,25,35,
 25,85,35,95,17,85,61,71,19,91,71,77,7,35,35,49,31,
 107,41,121,19,95,71,85,25,113,77,103]