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A078670
as a simple table
n
a(n)
1
1
2
1
3
0
4
4
5
21
6
169
7
1504
8
15755
9
177333
10
213789
[1,1,0,4,21,169,1504,15755,177333,213789]
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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)