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A108557 as a simple table

na(n)
01
13
29
363
4433
52823
617657
7107439
8642529
93802167
1022357097
11130970271
12765564049
134469342439
1426073165401
15152043343119
16886424978881
175167271805207
1830119654732489
19175558462395135
201023255914549617

[1,3,9,63,433,2823,17657,107439,642529,3802167,
 22357097,130970271,765564049,4469342439,
 26073165401,152043343119,886424978881,
 5167271805207,30119654732489,175558462395135,
 1023255914549617]