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A216492
as a simple table
n
a(n)
0
1
1
1
2
3
3
18
4
139
5
1286
6
12715
7
130875
[1,1,3,18,139,1286,12715,130875]
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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)
