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A213009 as a simple table

n a(n)
1 1
2 1
3 1
4 5
5 21
6 125
7 825
8 6133
9 49925
10 439417
11 4142945
12 41544161
13 440710117
14 4924691541
15 57766255689
16 709205703565
17 9090541134373
18 121389729560633
19 1685431945085489
20 24289856880005441
21 362776874949660485
22 5606980244843123077
23 89560387072919814553

[1,1,1,5,21,125,825,6133,49925,439417,4142945,
 41544161,440710117,4924691541,57766255689,
 709205703565,9090541134373,121389729560633,
 1685431945085489,24289856880005441,
 362776874949660485,5606980244843123077,
 89560387072919814553]

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Last modified February 7 02:40 EST 2023. Contains 360111 sequences. (Running on oeis4.)