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A287298 as a simple table

n a(n)
2 1
3 1
4 225
5 576
6 38025
7 751689
8 10323369
9 355624164
10 9814072356
11 279740499025
12 8706730814089
13 23132511879129
14 11027486960232964
15 435408094460869201
16 18362780530794065025
17 48470866291337805316
18 39207739576969100808801
19 1972312183619434816475625
20 104566626183621314286288961

[1,1,225,576,38025,751689,10323369,355624164,
 9814072356,279740499025,8706730814089,
 23132511879129,11027486960232964,
 435408094460869201,18362780530794065025,
 48470866291337805316,39207739576969100808801,
 1972312183619434816475625,
 104566626183621314286288961]

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Last modified November 18 13:22 EST 2018. Contains 317306 sequences. (Running on oeis4.)