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A218919 as a simple table

n a(n)
0 1
1 1
2 3
3 10
4 47
5 165
6 950
7 5632
8 43772
9 376586
10 3717663
11 40555909
12 484838080
13 6286289685 

[1,1,3,10,47,165,950,5632,43772,376586,3717663,
 40555909,484838080,6286289685]

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Last modified June 4 12:23 EDT 2024. Contains 373096 sequences. (Running on oeis4.)