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A009613 as a simple table

n a(n)
0 0
1 2
2 16
3 392
4 21376
5 1875872
6 227105536
7 35750690432
8 7110343684096
9 1750588208886272
10 523940264885702656
11 187423773435078920192
12 78905518064423548911616
13 38568578386644134655598592 

[0,2,16,392,21376,1875872,227105536,35750690432,
 7110343684096,1750588208886272,523940264885702656,
 187423773435078920192,78905518064423548911616,
 38568578386644134655598592]

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Last modified September 19 18:01 EDT 2024. Contains 376014 sequences. (Running on oeis4.)