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A081809 as a simple table

n a(n)
3 1
4 3
5 3
6 10
7 12
8 35
9 58
10 160
11 341
12 958
13 2444
14 7242
15 21190
16 67217
17 217335
18 740542
19 2593802
20 9444080
21 35383843 

[1,3,3,10,12,35,58,160,341,958,2444,7242,21190,
 67217,217335,740542,2593802,9444080,35383843]

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Last modified July 13 09:52 EDT 2024. Contains 374274 sequences. (Running on oeis4.)