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A321834 as a simple table

na(n)
11
21024
359048
41048576
59765626
660465152
7282475248
81073741824
93486725353
1010000001024
1125937424600
1261916315648
13137858491850
14289254653952
15576640684048
161099511627776
172015993900450
183570406761472
196131066257800
2010240001048576

[1,1024,59048,1048576,9765626,60465152,282475248,
 1073741824,3486725353,10000001024,25937424600,
 61916315648,137858491850,289254653952,
 576640684048,1099511627776,2015993900450,
 3570406761472,6131066257800,10240001048576]