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A257448 as a simple table

na(n)
11
29
337
4111
5283
6657
71441
83051
96319
1012909
1126149
1252695
13105859
14212265
15425161
16851043
171702903
183406725
196814477
2013630095
2127261451
2254524289
23109050097
24218101851
25436205503
26872412957
271744828021
283489658311
296979319059
3013958640729

[1,9,37,111,283,657,1441,3051,6319,12909,26149,
 52695,105859,212265,425161,851043,1702903,3406725,
 6814477,13630095,27261451,54524289,109050097,
 218101851,436205503,872412957,1744828021,
 3489658311,6979319059,13958640729]