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A124698 as a simple table

na(n)
01
15
213
329
473
5185
6481
71265
83361
98993
1024193
1165345
12177025
13480641
141307137
153559169
169699841
1726452481
1872173569
19196989953
20537802753
211468536833
224010582017
2310954043393
2429920862209
2581733033985
26223274237953

[1,5,13,29,73,185,481,1265,3361,8993,24193,65345,
 177025,480641,1307137,3559169,9699841,26452481,
 72173569,196989953,537802753,1468536833,
 4010582017,10954043393,29920862209,81733033985,
 223274237953]