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A030809 as a simple table

n a(n)
1 2
2 4
3 14
4 57
5 286
6 1717
7 12024
8 96198
9 865785
10 8657857
11 95236427
12 1142837124
13 14856882614
14 207996356596
15 3119945348943
16 49919125583092
17 848625134912575
18 15275252428426350
19 290229796140100651
20 5804595922802013034 

[2,4,14,57,286,1717,12024,96198,865785,8657857,
 95236427,1142837124,14856882614,207996356596,
 3119945348943,49919125583092,848625134912575,
 15275252428426350,290229796140100651,
 5804595922802013034]

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Last modified May 16 10:41 EDT 2024. Contains 372552 sequences. (Running on oeis4.)