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A050598 as a simple table

na(n)
15
213
315
431
577
6151
7181
8245
9445
10447
11883
121037
133557
1443733
15290861
16464887
17530181

[5,13,15,31,77,151,181,245,445,447,883,1037,3557,
 43733,290861,464887,530181]