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A234460 as a simple table

n a(n)
1 1
2 0
3 7800
4 0
5 2787453552000000
6 0
7 3108366378804858902744832000000000000
8 0
9 165290679439545659068950724771043004678057040281600000000000000000000
10 0 

[1,0,7800,0,2787453552000000,0,
 3108366378804858902744832000000000000,0,
 16529067943954565906895072477104300467805704028160\
 0000000000000000000,0]

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Last modified April 20 00:58 EDT 2024. Contains 371798 sequences. (Running on oeis4.)