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A106568 as a simple table

n a(n)
0 0
1 4
2 16
3 80
4 384
5 1856
6 8960
7 43264
8 208896
9 1008640
10 4870144
11 23515136
12 113541120
13 548225024
14 2647064576
15 12781158400
16 61712891904
17 297976201216
18 1438756372480
19 6946930294784
20 33542746669056
21 161958707855360

[0,4,16,80,384,1856,8960,43264,208896,1008640,
 4870144,23515136,113541120,548225024,2647064576,
 12781158400,61712891904,297976201216,
 1438756372480,6946930294784,33542746669056,
 161958707855360]

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Last modified April 25 07:53 EDT 2024. Contains 371964 sequences. (Running on oeis4.)