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A055812 as a simple table

n a(n)
1 0
2 1
3 4
4 9
5 49
6 81
7 324
8 2209
9 15129
10 25921
11 103684
12 710649
13 4870849
14 8346321
15 33385284
16 228826129
17 1568397609
18 2687489281
19 10749957124
20 73681302249
21 505019158609
22 865363202001
23 3461452808004

[0,1,4,9,49,81,324,2209,15129,25921,103684,710649,
 4870849,8346321,33385284,228826129,1568397609,
 2687489281,10749957124,73681302249,505019158609,
 865363202001,3461452808004]

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Last modified March 29 21:32 EDT 2020. Contains 333117 sequences. (Running on oeis4.)