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A321833 as a simple table

na(n)
11
2512
319682
4262144
51953126
610077184
740353606
8134217728
9387400807
101000000512
112357947690
125159518208
1310604499374
1420661046272
1538441425932
1668719476736
17118587876498
18198349213184
19322687697778
20512000262144
21794239673292

[1,512,19682,262144,1953126,10077184,40353606,
 134217728,387400807,1000000512,2357947690,
 5159518208,10604499374,20661046272,38441425932,
 68719476736,118587876498,198349213184,
 322687697778,512000262144,794239673292]