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A156086 as a simple table

n a(n)
0 0
1 9
2 450
3 21186
4 995355
5 46760580
6 2196752004
7 103200583725
8 4848230683206
9 227763641527110
10 10700042921091135
11 502674253649756424
12 23614989878617461000
13 1109401850041370910801
14 52118271962065815346890
15 2448449380367051950393290

[0,9,450,21186,995355,46760580,2196752004,
 103200583725,4848230683206,227763641527110,
 10700042921091135,502674253649756424,
 23614989878617461000,1109401850041370910801,
 52118271962065815346890,2448449380367051950393290]

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Last modified July 31 17:11 EDT 2021. Contains 346376 sequences. (Running on oeis4.)