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A000838 as a simple table

n a(n)
1 4
2 28
3 2272
4 67170304
5 144115192236605440
6 1329227995784915891062320757838184448
7 226156424291633194186662080095093570363541849729447858357132587076662853632 

[4,28,2272,67170304,144115192236605440,
 1329227995784915891062320757838184448,
 22615642429163319418666208009509357036354184972944\
 7858357132587076662853632]

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Last modified April 23 12:08 EDT 2024. Contains 371912 sequences. (Running on oeis4.)