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A001205 as a simple table

n a(n)
0 1
1 0
2 0
3 1
4 3
5 12
6 70
7 465
8 3507
9 30016
10 286884
11 3026655
12 34944085
13 438263364
14 5933502822
15 86248951243
16 1339751921865
17 22148051088480
18 388246725873208
19 7193423109763089
20 140462355821628771
21 2883013994348484940

[1,0,0,1,3,12,70,465,3507,30016,286884,3026655,
 34944085,438263364,5933502822,86248951243,
 1339751921865,22148051088480,388246725873208,
 7193423109763089,140462355821628771,
 2883013994348484940]

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Last modified May 28 11:40 EDT 2020. Contains 334681 sequences. (Running on oeis4.)