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A300918 as a simple table

n a(n)
1 1
2 5
3 20
4 76
5 290
6 1245
7 5160
8 21819
9 91713
10 388059
11 1639111
12 6934811
13 29326929
14 124078694
15 524899537
16 2220794401
17 9395650615
18 39752075589
19 168185729492
20 711577787970
21 3010611147958
22 12737611709683
23 53891601910235

[1,5,20,76,290,1245,5160,21819,91713,388059,
 1639111,6934811,29326929,124078694,524899537,
 2220794401,9395650615,39752075589,168185729492,
 711577787970,3010611147958,12737611709683,
 53891601910235]

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Last modified May 28 12:54 EDT 2024. Contains 372913 sequences. (Running on oeis4.)