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A016810 as a simple table

na(n)
00
11048576
21073741824
361917364224
41099511627776
510240000000000
663403380965376
7296196766695424
81125899906842624
93656158440062976
1010485760000000000
1127197360938418176
1264925062108545024
13144555105949057024
14303305489096114176
15604661760000000000

[0,1048576,1073741824,61917364224,1099511627776,
 10240000000000,63403380965376,296196766695424,
 1125899906842624,3656158440062976,
 10485760000000000,27197360938418176,
 64925062108545024,144555105949057024,
 303305489096114176,604661760000000000]