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A021103 as a simple table

n a(n)
1 0
2 0
3 1
4 1
5 3
6 9
7 44
8 294
9 2893
10 36496
11 545808
12 9029737
13 159563559
14 2952794985
15 56589742050

[0,0,1,1,3,9,44,294,2893,36496,545808,9029737,
 159563559,2952794985,56589742050]

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Last modified February 25 19:45 EST 2020. Contains 332258 sequences. (Running on oeis4.)