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A069840 as a simple table

n a(n)
4 16
5 80
6 666
7 6588
8 80886
9 1146916
10 18583160
11 337808300
12 6812539360
13 150922350288
14 3643698427650
15 95221941543232
16 2678117152113428
17 80658585770586368
18 2590036811212597862
19 88333886984966359596
20 3188853320209605353376
21 121480126482182314239216
22 4870248707151384381179450

[16,80,666,6588,80886,1146916,18583160,337808300,
 6812539360,150922350288,3643698427650,
 95221941543232,2678117152113428,80658585770586368,
 2590036811212597862,88333886984966359596,
 3188853320209605353376,121480126482182314239216,
 4870248707151384381179450]

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Last modified June 6 06:03 EDT 2024. Contains 373115 sequences. (Running on oeis4.)