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A203511 as a simple table

n a(n)
0 1
1 1
2 4
3 252
4 576576
5 87178291200
6 1386980110791475200
7 3394352757964564324299571200
8 1760578659300452732262852600316664217600
9 255323290537547288382098619855584488593426606981120000 

[1,1,4,252,576576,87178291200,1386980110791475200,
 3394352757964564324299571200,
 1760578659300452732262852600316664217600,
 25532329053754728838209861985558448859342660698112\
 0000]

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Last modified September 15 20:25 EDT 2024. Contains 375955 sequences. (Running on oeis4.)