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A058425 as a simple table

na(n)
15
215
345
4235
5505
6745
71415
81485
94495
105005
1115985
1250005
1372495
14469255
15500005
16500505
171597505
181598515
194474955
205000005
215000505
225050005
237085235
2415008515
2544949995
2650000005
2750000505
2850005005
2950500005
30500000005
31500000505

[5,15,45,235,505,745,1415,1485,4495,5005,15985,
 50005,72495,469255,500005,500505,1597505,1598515,
 4474955,5000005,5000505,5050005,7085235,15008515,
 44949995,50000005,50000505,50005005,50500005,
 500000005,500000505]