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A057725 as a simple table

n a(n)
1 1
2 4
3 16
4 77
5 351
6 1747
7 8745
8 44724
9 230765
10 1203567
11 6323074
12 33444084
13 177863517
14 950557538
15 5101540598 

[1,4,16,77,351,1747,8745,44724,230765,1203567,
 6323074,33444084,177863517,950557538,5101540598]

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)