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A234855 as a simple table

n a(n)
0 1
1 1
2 3
3 21
4 241
5 3951
6 85499
7 2325205
8 76860673
9 3014656183
10 137784836475
11 7235668490589
12 431692029451009
13 28991550501283359
14 2174713803535479419
15 181001542259074421413
16 16618721538838243841185
17 1674634828088234390862727
18 184352162064651888588105243

[1,1,3,21,241,3951,85499,2325205,76860673,
 3014656183,137784836475,7235668490589,
 431692029451009,28991550501283359,
 2174713803535479419,181001542259074421413,
 16618721538838243841185,1674634828088234390862727,
 184352162064651888588105243]

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Last modified May 29 05:00 EDT 2022. Contains 354122 sequences. (Running on oeis4.)