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A288590 as a simple table

na(n)
01
13
23
314
47
563
614
7251
827
91016
1057
114079
12127
1316376
14251
1565435
16442
17262139
181018
191048091
201914
214194171
223866
2316776035
247802
2567108751
2614366
27268431167
2831870
291073740647
3058118
314294946791
32130566
3317179867879
34237542
3568719387527
36517606

[1,3,3,14,7,63,14,251,27,1016,57,4079,127,16376,
 251,65435,442,262139,1018,1048091,1914,4194171,
 3866,16776035,7802,67108751,14366,268431167,31870,
 1073740647,58118,4294946791,130566,17179867879,
 237542,68719387527,517606]