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A233911 as a simple table

n a(n)
1 640
2 3944
3 22632
4 138132
5 807964
6 4908404
7 28936484
8 175407492
9 1039210048
10 6291984872
11 37411050288
12 226333090864
13 1349436837188
14 8159273967724
15 48752105141528
16 294639966341512
17 1763518515517052
18 10653925639599432

[640,3944,22632,138132,807964,4908404,28936484,
 175407492,1039210048,6291984872,37411050288,
 226333090864,1349436837188,8159273967724,
 48752105141528,294639966341512,1763518515517052,
 10653925639599432]

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Last modified January 17 17:47 EST 2022. Contains 350402 sequences. (Running on oeis4.)