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A303509 as a simple table

n a(n)
1 8
2 52
3 230
4 1596
5 10128
6 59086
7 377020
8 2366996
9 14512973
10 91007689
11 568325707
12 3528368086
13 22026917288
14 137360903740
15 855370949486
16 5333814182382
17 33250480852297
18 207209048212942
19 1291711060574596
20 8051741497047830 

[8,52,230,1596,10128,59086,377020,2366996,
 14512973,91007689,568325707,3528368086,
 22026917288,137360903740,855370949486,
 5333814182382,33250480852297,207209048212942,
 1291711060574596,8051741497047830]

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Last modified July 30 19:14 EDT 2024. Contains 374771 sequences. (Running on oeis4.)