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A020109 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 19
5 93
6 544
7 3742
8 29514
9 262342
10 2594262
11 28248628
12 335844793
13 4328666216
14 60120364101
15 895125421054
16 14222548356739
17 240203038913808
18 4296965473902564
19 81164903395937307
20 1614279745319197539

[1,1,2,5,19,93,544,3742,29514,262342,2594262,
 28248628,335844793,4328666216,60120364101,
 895125421054,14222548356739,240203038913808,
 4296965473902564,81164903395937307,
 1614279745319197539]

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Last modified April 11 16:42 EDT 2021. Contains 342888 sequences. (Running on oeis4.)