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A291274 as a simple table

n a(n)
0 1
1 1
2 4
3 36
4 384
5 5125
6 81864
7 1519833
8 32219136
9 768352149
10 20367510000
11 594270942705
12 18929706034176
13 653744865197242
14 24333393186194848
15 971177936039212500
16 41376191798281502720
17 1874320475909920820607
18 89961819584112859211712
19 4560744533588836253021837

[1,1,4,36,384,5125,81864,1519833,32219136,
 768352149,20367510000,594270942705,18929706034176,
 653744865197242,24333393186194848,
 971177936039212500,41376191798281502720,
 1874320475909920820607,89961819584112859211712,
 4560744533588836253021837]

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Last modified April 23 10:29 EDT 2024. Contains 371905 sequences. (Running on oeis4.)