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A264519 as a simple table

na(n)
19
216
32116
444521
51525225
643731769
71250046736
836412654041
91023636039001
1029395568245824
11828988131959716
1223599139118132769
13667319223491080281
1418929485248132797584
15535857588485957276361
1615182115680784904368400

[9,16,2116,44521,1525225,43731769,1250046736,
 36412654041,1023636039001,29395568245824,
 828988131959716,23599139118132769,
 667319223491080281,18929485248132797584,
 535857588485957276361,15182115680784904368400]