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A165817 as a simple table

n a(n)
0 1
1 2
2 10
3 56
4 330
5 2002
6 12376
7 77520
8 490314
9 3124550
10 20030010
11 129024480
12 834451800
13 5414950296
14 35240152720
15 229911617056
16 1503232609098
17 9847379391150
18 64617565719070
19 424655979547800
20 2794563003870330
21 18412956934908690
22 121455445321173600

[1,2,10,56,330,2002,12376,77520,490314,3124550,
 20030010,129024480,834451800,5414950296,
 35240152720,229911617056,1503232609098,
 9847379391150,64617565719070,424655979547800,
 2794563003870330,18412956934908690,
 121455445321173600]

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Last modified July 17 02:13 EDT 2024. Contains 374360 sequences. (Running on oeis4.)