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A231992 as a simple table

n a(n)
1 6
2 32
3 156
4 800
5 4000
6 20228
7 101808
8 513400
9 2586980
10 13039568
11 65717568
12 331222548
13 1669362032
14 8413644600
15 42404958708
16 213722166160
17 1077165216736
18 5428941217444
19 27362005944240
20 137905229697144
21 695045979384260

[6,32,156,800,4000,20228,101808,513400,2586980,
 13039568,65717568,331222548,1669362032,8413644600,
 42404958708,213722166160,1077165216736,
 5428941217444,27362005944240,137905229697144,
 695045979384260]

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Last modified April 16 12:36 EDT 2024. Contains 371711 sequences. (Running on oeis4.)