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A194478 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 337
6 8733
7 96478
8 668028
9 3413828
10 14054915
11 49171641
12 151422970
13 420674150
14 1073422309
15 2550004472
16 5699074284
17 12082541388
18 24462528078
19 47555986746
20 89173692795
21 161899772067
22 285517344145
23 490447009030

[0,0,0,1,337,8733,96478,668028,3413828,14054915,
 49171641,151422970,420674150,1073422309,
 2550004472,5699074284,12082541388,24462528078,
 47555986746,89173692795,161899772067,285517344145,
 490447009030]

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Last modified December 12 07:16 EST 2018. Contains 318053 sequences. (Running on oeis4.)