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A151540
as a simple table
n
a(n)
1
1
2
3
3
14
4
54
5
239
6
1007
7
4375
8
18728
9
80572
10
344651
11
1473402
12
6280556
13
26732173
[1,3,14,54,239,1007,4375,18728,80572,344651, 1473402,6280556,26732173]
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Last modified April 19 08:08 EDT 2024. Contains 371782 sequences. (Running on oeis4.)