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A298391 as a simple table

na(n)
11
27
315
429
563
6167
7473
81205
93161
108399
1122021
1258279
13153851
14405489
151070981
162826361
177458763
1819688757
1951962947
20137149575
21361994337
22955427345
232521739769
246655820967
2517567183369
2646366440203
27122378424487
28323002621161

[1,7,15,29,63,167,473,1205,3161,8399,22021,58279,
 153851,405489,1070981,2826361,7458763,19688757,
 51962947,137149575,361994337,955427345,2521739769,
 6655820967,17567183369,46366440203,122378424487,
 323002621161]