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A026569 as a simple table

na(n)
01
11
23
35
413
527
667
7153
8375
9893
102189
115319
1213089
1332155
1479479
15196573
16487833
171212135
183018355
197525585
2018792303
2146980373
22117589689
23294613155
24738844719
251854484305
264658460165
2711710592711
2829458662005
2974151824271

[1,1,3,5,13,27,67,153,375,893,2189,5319,13089,
 32155,79479,196573,487833,1212135,3018355,7525585,
 18792303,46980373,117589689,294613155,738844719,
 1854484305,4658460165,11710592711,29458662005,
 74151824271]