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A280763 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 18
6 75
7 318
8 1599
9 8439
10 48824
11 300747
12 2030086
13 15425065
14 141798617 

[1,1,2,6,18,75,318,1599,8439,48824,300747,2030086,
 15425065,141798617]

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Last modified April 23 02:23 EDT 2024. Contains 371906 sequences. (Running on oeis4.)