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A181384
as a simple table
n
a(n)
1
1
2
20
3
272
4
3549
5
34234
6
244503
7
1454243
8
7201405
9
25018440
[1,20,272,3549,34234,244503,1454243,7201405, 25018440]
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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)