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A063765 as a simple table

na(n)
16
210
322
434
574
6134
7262
8514
91042
102062
114106
128198
1316418
1432822
1565542
16131074
17262202
18524294
191048618
202097166
214194338
228388638
2316777234
2433554518
2567108934
26134217758
27268435514
28536870918
291073741846
302147483654

[6,10,22,34,74,134,262,514,1042,2062,4106,8198,
 16418,32822,65542,131074,262202,524294,1048618,
 2097166,4194338,8388638,16777234,33554518,
 67108934,134217758,268435514,536870918,1073741846,
 2147483654]