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A277748 as a simple table

n a(n)
1 1
2 4
3 40
4 768
5 27648
6 1900544
7 253755392

[1,4,40,768,27648,1900544,253755392]

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Last modified September 25 05:14 EDT 2021. Contains 347652 sequences. (Running on oeis4.)