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A080698 as a simple table

na(n)
115
255
3341
41003
53161
67339
716343
825063
955247
1062809
11105901
12127991
13190277
14220223
15236597
16325291
17358261
18463487
19512263
20641593
21812327
221213843
231293431
241502399
251944893
262351677
272633803
282806733
293050519
303250847

[15,55,341,1003,3161,7339,16343,25063,55247,62809,
 105901,127991,190277,220223,236597,325291,358261,
 463487,512263,641593,812327,1213843,1293431,
 1502399,1944893,2351677,2633803,2806733,3050519,
 3250847]