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A173987 as a simple table

n a(n)
0 1
1 4
2 100
3 1600
4 193600
5 9486400
6 2741569600
7 2741569600
8 1450290318400
9 245099063809600
10 206128312663873600
11 3298053002621977600
12 3298053002621977600
13 1190597133946533913600
14 2001393782164123508761600

[1,4,100,1600,193600,9486400,2741569600,
 2741569600,1450290318400,245099063809600,
 206128312663873600,3298053002621977600,
 3298053002621977600,1190597133946533913600,
 2001393782164123508761600]

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)