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A307051 as a simple table

n a(n)
1 4
2 16
3 68
4 256
5 1028
6 4112
7 7200
8 65536
9 262148
10 921600
11 1036800
12 1048592
13 16777472
14 88218000
15 371404800
16 418535784576

[4,16,68,256,1028,4112,7200,65536,262148,921600,
 1036800,1048592,16777472,88218000,371404800,
 418535784576]

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Last modified April 24 12:53 EDT 2024. Contains 371943 sequences. (Running on oeis4.)