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A175671 as a simple table

n a(n)
0 1
1 6
2 20
3 567
4 3240
5 155925
6 8292375
7 147349125
8 312615903600
9 103180488035625
10 769328200265625
11 316985199315159375
12 8682638068197843750
13 165206922515800790625
14 527010082825404522093750
15 39040543480476432234965625
16 33712429605969723121012500000
17 1968441947987203748028891796875

[1,6,20,567,3240,155925,8292375,147349125,
 312615903600,103180488035625,769328200265625,
 316985199315159375,8682638068197843750,
 165206922515800790625,527010082825404522093750,
 39040543480476432234965625,
 33712429605969723121012500000,
 1968441947987203748028891796875]

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Last modified April 23 05:56 EDT 2021. Contains 343199 sequences. (Running on oeis4.)