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A049869 as a simple table

n a(n)
0 1
1 18
2 648
3 683253810
4 18277247229553861734086286719130
5 183338496737597442552032556385320299285077278828958986337475538895489368739369176364504064357258701313760 

[1,18,648,683253810,
 18277247229553861734086286719130,
 18333849673759744255203255638532029928507727882895\
 89863374755388954893687393691763645040643572587013\
 13760]

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Last modified August 31 21:24 EDT 2024. Contains 375573 sequences. (Running on oeis4.)