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A054407 as a simple table

n a(n)
0 0
1 0
2 0
3 36
4 7860
5 4177152
6 8589313152
7 70368605798400
8 2305842990423490560
9 302231454885790246502400
10 158456325028519245775644917760
11 332306998946228931044233275859009536
12 2787593149816327892614636032925171439370240 

[0,0,0,36,7860,4177152,8589313152,70368605798400,
 2305842990423490560,302231454885790246502400,
 158456325028519245775644917760,
 332306998946228931044233275859009536,
 2787593149816327892614636032925171439370240]

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Last modified May 15 18:29 EDT 2024. Contains 372549 sequences. (Running on oeis4.)