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A002109 as a simple table

n a(n)
0 1
1 1
2 4
3 108
4 27648
5 86400000
6 4031078400000
7 3319766398771200000
8 55696437941726556979200000
9 21577941222941856209168026828800000
10 215779412229418562091680268288000000000000000
11 61564384586635053951550731889313964883968000000000000000 

[1,1,4,108,27648,86400000,4031078400000,
 3319766398771200000,55696437941726556979200000,
 21577941222941856209168026828800000,
 215779412229418562091680268288000000000000000,
 61564384586635053951550731889313964883968000000000\
 000000]

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Last modified April 27 12:04 EDT 2024. Contains 372019 sequences. (Running on oeis4.)