A159440 - OEIS

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A159440 as a simple table

n	a(n)
3	72
4	564902
5	7495351520
6	117623151143944
7	1717015034048659800
8	20468273127459736256716
9	179432225352230388062143040

[72,564902,7495351520,117623151143944, 1717015034048659800,20468273127459736256716, 179432225352230388062143040]