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A172758 as a simple table

n a(n)
1 20
2 16260
3 20933840
4 33833709700
5 62810128195920
6 127676780106968400
7 276686670102097569600
8 628807365128705353776900
9 1482500191777802616831698000
10 3598791496054686645936395190160 

[20,16260,20933840,33833709700,62810128195920,
 127676780106968400,276686670102097569600,
 628807365128705353776900,
 1482500191777802616831698000,
 3598791496054686645936395190160]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)