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A016961 as a simple table

na(n)
01024
1100000
21048576
35153632
417210368
545435424
6102400000
7205962976
8380204032
9656356768
101073741824
111680700000
122535525376
133707398432
145277319168
157339040224
1610000000000
1713382255776
1817623416832
1922877577568
2029316250624
2137129300000
2246525874176

[1024,100000,1048576,5153632,17210368,45435424,
 102400000,205962976,380204032,656356768,
 1073741824,1680700000,2535525376,3707398432,
 5277319168,7339040224,10000000000,13382255776,
 17623416832,22877577568,29316250624,37129300000,
 46525874176]