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A303566 as a simple table

n a(n)
0 1
1 4
2 8
3 40
4 128
5 1168
6 4448
7 66400
8 268544
9 6124480
10 25118336
11 827294848
12 3386501120
13 153439657216
14 624706655744
15 37378784384512
16 151446759993344
17 11573673369828352
18 46729404312578048
19 4439994292732364800
20 17884613664930529280
21 2067374053521268559872

[1,4,8,40,128,1168,4448,66400,268544,6124480,
 25118336,827294848,3386501120,153439657216,
 624706655744,37378784384512,151446759993344,
 11573673369828352,46729404312578048,
 4439994292732364800,17884613664930529280,
 2067374053521268559872]

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Last modified May 6 15:46 EDT 2024. Contains 372294 sequences. (Running on oeis4.)