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A028671 as a simple table

n a(n)
0 1
1 72
2 466560
3 247608990720
4 10657130578027315200
5 37158487365982254056334950400
6 10494634615565778355427184150449750016000

[1,72,466560,247608990720,10657130578027315200,
 37158487365982254056334950400,
 10494634615565778355427184150449750016000]

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Last modified July 1 16:27 EDT 2022. Contains 354973 sequences. (Running on oeis4.)