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A229713
as a simple table
n
a(n)
1
1
2
8
3
28
4
82
5
500
6
2740
7
15040
8
100630
9
704000
10
5310960
11
44616536
[1,8,28,82,500,2740,15040,100630,704000,5310960, 44616536]
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Last modified April 19 06:44 EDT 2024. Contains 371782 sequences. (Running on oeis4.)