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A281380 as a simple table

na(n)
11
23
35
411
519
643
791
8123
9135
10327
11455
12551
13935
141127
151383
161767
172023
182071
192839
203223
213991
224183
234695
245463
255975
266359
276871
287639
298151
308247
319783
3210551
3312087
3412471
3514007
3614775
3716311
3816503
3917527
4019063
4120087
4220855
4321879
4423415
4524439
4624823
4725847
4827383

[1,3,5,11,19,43,91,123,135,327,455,551,935,1127,
 1383,1767,2023,2071,2839,3223,3991,4183,4695,5463,
 5975,6359,6871,7639,8151,8247,9783,10551,12087,
 12471,14007,14775,16311,16503,17527,19063,20087,
 20855,21879,23415,24439,24823,25847,27383]