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A067474 as a simple table

n a(n)
1 4
2 49
3 400
4 4096
5 40000
6 400689
7 4000000
8 40005625
9 400000000
10 4000056516
11 40000000000
12 400000591936
13 4000000000000
14 40000008597136
15 400000000000000
16 4000000100766916
17 40000000000000000
18 400000001222314089
19 4000000000000000000
20 40000000008389413041

[4,49,400,4096,40000,400689,4000000,40005625,
 400000000,4000056516,40000000000,400000591936,
 4000000000000,40000008597136,400000000000000,
 4000000100766916,40000000000000000,
 400000001222314089,4000000000000000000,
 40000000008389413041]

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Last modified April 19 07:24 EDT 2024. Contains 371782 sequences. (Running on oeis4.)