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A209080 as a simple table

n a(n)
0 1
1 20
2 400
3 1702
4 8659
5 49401
6 287740
7 1934794
8 11569093
9 65443733
10 360231372
11 1872156836 

[1,20,400,1702,8659,49401,287740,1934794,11569093,
 65443733,360231372,1872156836]

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Last modified May 13 02:41 EDT 2024. Contains 372497 sequences. (Running on oeis4.)