A135421 - OEIS

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A135421 as a simple table

n	a(n)
0	1
1	30
2	32400
3	1259712000
4	1763193692160000
5	88844650093530316800000
6	161162887476414617908936704000000
7	10524495800322448706290880214277816320000000
8	24742299477723936603969643338598393206990805401600000000

[1,30,32400,1259712000,1763193692160000, 88844650093530316800000, 161162887476414617908936704000000, 10524495800322448706290880214277816320000000, 24742299477723936603969643338598393206990805401600\ 000000]