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A270415 as a simple table

na(n)
13
25
310
417
526
665
765537
8146690
9703922
101481090
111885130
122036330
132211170
142430482
152505890
165470922
179840770
1811607650
1917783090
2024137570
2174425130
2276615010
2377563250
24133379402
25138697730
26138980522
27142396490
28155575730
29177715562
30181899170

[3,5,10,17,26,65,65537,146690,703922,1481090,
 1885130,2036330,2211170,2430482,2505890,5470922,
 9840770,11607650,17783090,24137570,74425130,
 76615010,77563250,133379402,138697730,138980522,
 142396490,155575730,177715562,181899170]