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A213880 as a simple table

n a(n)
1 45
2 3960
3 279720
4 16798320
5 839991600
6 33599966400
7 1007999899200
8 20159999798400
9 201599999798400

[45,3960,279720,16798320,839991600,33599966400,
 1007999899200,20159999798400,201599999798400]

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Last modified May 25 05:58 EDT 2022. Contains 354048 sequences. (Running on oeis4.)