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A231822 as a simple table

n a(n)
1 1
2 9
3 64
4 439
5 2992
6 20382
7 138852
8 945923
9 6444056
10 43899870
11 299066137
12 2037376372
13 13879547189
14 94553875250
15 644144597665
16 4388210021417
17 29894510123024
18 203655187692590
19 1387393046555052
20 9451561177738998

[1,9,64,439,2992,20382,138852,945923,6444056,
 43899870,299066137,2037376372,13879547189,
 94553875250,644144597665,4388210021417,
 29894510123024,203655187692590,1387393046555052,
 9451561177738998]

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)