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A067689 as a simple table

n a(n)
0 1
1 2
2 72
3 43200
4 423360000
5 67212633600000
6 172153600393420800000
7 7097063852481244869427200000
8 4702142622508202833251304734720000000
9 50019370356486058711268515056654483456000000000
10 8537000898240926708833515201784986712482596782080000000000

[1,2,72,43200,423360000,67212633600000,
 172153600393420800000,
 7097063852481244869427200000,
 4702142622508202833251304734720000000,
 50019370356486058711268515056654483456000000000,
 85370008982409267088335152017849867124825967820800\
 00000000]

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Last modified September 4 14:12 EDT 2024. Contains 375683 sequences. (Running on oeis4.)