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A222936 as a simple table

n a(n)
1 4
2 16
3 48
4 256
5 1024
6 4096
7 15820
8 65536
9 262144
10 1048576
11 4182016
12 16777216
13 67108864
14 268435456
15 1073476576
16 4294967296
17 17179869184
18 68719476736
19 274872664064
20 1099511627776
21 4398046511104
22 17592186044416
23 70368643424320

[4,16,48,256,1024,4096,15820,65536,262144,1048576,
 4182016,16777216,67108864,268435456,1073476576,
 4294967296,17179869184,68719476736,274872664064,
 1099511627776,4398046511104,17592186044416,
 70368643424320]

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Last modified December 4 14:29 EST 2023. Contains 367563 sequences. (Running on oeis4.)