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A000304 as a simple table

n a(n)
2 2
3 3
4 6
5 18
6 108
7 1944
8 209952
9 408146688
10 85691213438976
11 34974584955819144511488
12 2997014624388697307377363936018956288
13 104819342594514896999066634490728502944926883876041385836544 

[2,3,6,18,108,1944,209952,408146688,
 85691213438976,34974584955819144511488,
 2997014624388697307377363936018956288,
 10481934259451489699906663449072850294492688387604\
 1385836544]

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Last modified May 15 02:58 EDT 2024. Contains 372536 sequences. (Running on oeis4.)