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A241843 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 6
6 54
7 581
8 9503
9 249169
10 11607032
11 1005452874
12 164042264045
13 50335602558672
14 29003480904157108

[0,0,0,1,6,54,581,9503,249169,11607032,1005452874,
 164042264045,50335602558672,29003480904157108]

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Last modified August 6 16:03 EDT 2020. Contains 336255 sequences. (Running on oeis4.)