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A271161 as a simple table

n a(n)
0 1
1 4
2 32
3 200
4 860
5 3448
6 14048
7 57108
8 227420
9 904432
10 3618540
11 14438616
12 57738456
13 230833880
14 923143832
15 3692116492 

[1,4,32,200,860,3448,14048,57108,227420,904432,
 3618540,14438616,57738456,230833880,923143832,
 3692116492]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)