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A039506 as a simple table

n a(n)
1 3
2 23
3 99
4 420
5 1807
6 8287
7 40017
8 202208
9 1059807
10 5736717
11 31911465
12 182019293
13 1060723057 

[3,23,99,420,1807,8287,40017,202208,1059807,
 5736717,31911465,182019293,1060723057]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)