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A225148 as a simple table

na(n)
1127
21093
32801
419531
522621
630941
755987
888741
9131071
10245411
11292561
12346201
13524287
14637421
15732541
16797161
17837931
182625641
193500201
203835261
215229043
226377551
238108731
2412207031
2515018571
2616007041
2721700501
2825646167
2928792661
3030397351
3135615581

[127,1093,2801,19531,22621,30941,55987,88741,
 131071,245411,292561,346201,524287,637421,732541,
 797161,837931,2625641,3500201,3835261,5229043,
 6377551,8108731,12207031,15018571,16007041,
 21700501,25646167,28792661,30397351,35615581]