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A022562 as a simple table

n a(n)
1 1
2 1
3 2
4 5
5 14
6 50
7 191
8 881
9 4494
10 26389
11 184749
12 1728404
13 23805256
14 491544474
15 14491876320 

[1,1,2,5,14,50,191,881,4494,26389,184749,1728404,
 23805256,491544474,14491876320]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)