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A190358 as a simple table

na(n)
115
221
333
457
5185
6201
7393
81841
95753
107217
1110265
1212297
13139553
14607577
1598313
16196617
173801929
18786441
1927790073
207340081
2135651873
22281022857
2392274809
24721422137
251375733393
266509569217
273892314953
28805306377

[15,21,33,57,185,201,393,1841,5753,7217,10265,
 12297,139553,607577,98313,196617,3801929,786441,
 27790073,7340081,35651873,281022857,92274809,
 721422137,1375733393,6509569217,3892314953,
 805306377]