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A213451
as a simple table
n
a(n)
1
3
2
15
3
69
4
309
5
1365
6
5973
7
25941
8
112065
9
482067
10
2066583
11
8834469
12
37677603
13
160367343
[3,15,69,309,1365,5973,25941,112065,482067, 2066583,8834469,37677603,160367343]
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Last modified April 27 18:09 EDT 2024. Contains 372020 sequences. (Running on oeis4.)
