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A202989 as a simple table

n a(n)
0 1
1 4
2 100
3 21952
4 45212176
5 864866612224
6 151334226289000000
7 240066313618039143841792
8 3437872835498096514323500400896
9 443629285048033016198674962874808664064
10 515464807019389919369209932597753906250000000000

[1,4,100,21952,45212176,864866612224,
 151334226289000000,240066313618039143841792,
 3437872835498096514323500400896,
 443629285048033016198674962874808664064,
 515464807019389919369209932597753906250000000000]

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Last modified April 7 04:20 EDT 2020. Contains 333292 sequences. (Running on oeis4.)