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A270088 as a simple table

n a(n)
0 1
1 4
2 40
3 225
4 961
5 3969
6 16129
7 65025
8 261121
9 1046529
10 4190209
11 16769025
12 67092481
13 268402689
14 1073676289
15 4294836225

[1,4,40,225,961,3969,16129,65025,261121,1046529,
 4190209,16769025,67092481,268402689,1073676289,
 4294836225]

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Last modified June 9 20:03 EDT 2024. Contains 373248 sequences. (Running on oeis4.)